path: root/templates/man3/mallopt.3.pot

# SOME DESCRIPTIVE TITLE
# Copyright (C) YEAR Free Software Foundation, Inc.
# This file is distributed under the same license as the PACKAGE package.
# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
#
#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: PACKAGE VERSION\n"
"POT-Creation-Date: 2024-06-01 06:01+0200\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"Language: \n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"

#. type: TH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "mallopt"
msgstr ""

#. type: TH
#: archlinux debian-unstable opensuse-tumbleweed
#, no-wrap
msgid "2024-05-02"
msgstr ""

#. type: TH
#: archlinux debian-unstable
#, no-wrap
msgid "Linux man-pages 6.8"
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "NAME"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "mallopt - set memory allocation parameters"
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "LIBRARY"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Standard C library (I<libc>, I<-lc>)"
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SYNOPSIS"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<#include E<lt>malloc.hE<gt>>\n"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<int mallopt(int >I<param>B<, int >I<value>B<);>\n"
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "DESCRIPTION"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The B<mallopt>()  function adjusts parameters that control the behavior of "
"the memory-allocation functions (see B<malloc>(3)).  The I<param> argument "
"specifies the parameter to be modified, and I<value> specifies the new value "
"for that parameter."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The following values can be specified for I<param>:"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_ARENA_MAX>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If this parameter has a nonzero value, it defines a hard limit on the "
"maximum number of arenas that can be created.  An arena represents a pool of "
"memory that can be used by B<malloc>(3)  (and similar) calls to service "
"allocation requests.  Arenas are thread safe and therefore may have multiple "
"concurrent memory requests.  The trade-off is between the number of threads "
"and the number of arenas.  The more arenas you have, the lower the per-"
"thread contention, but the higher the memory usage."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The default value of this parameter is 0, meaning that the limit on the "
"number of arenas is determined according to the setting of B<M_ARENA_TEST>."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This parameter has been available since glibc 2.10 via B<--enable-"
"experimental-malloc>, and since glibc 2.15 by default.  In some versions of "
"the allocator there was no limit on the number of created arenas (e.g., "
"CentOS 5, RHEL 5)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When employing newer glibc versions, applications may in some cases exhibit "
"high contention when accessing arenas.  In these cases, it may be beneficial "
"to increase B<M_ARENA_MAX> to match the number of threads.  This is similar "
"in behavior to strategies taken by tcmalloc and jemalloc (e.g., per-thread "
"allocation pools)."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_ARENA_TEST>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This parameter specifies a value, in number of arenas created, at which "
"point the system configuration will be examined to determine a hard limit on "
"the number of created arenas.  (See B<M_ARENA_MAX> for the definition of an "
"arena.)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The computation of the arena hard limit is implementation-defined and is "
"usually calculated as a multiple of the number of available CPUs.  Once the "
"hard limit is computed, the result is final and constrains the total number "
"of arenas."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The default value for the B<M_ARENA_TEST> parameter is 2 on systems where "
"I<sizeof(long)> is 4; otherwise the default value is 8."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This parameter has been available since glibc 2.10 via B<--enable-"
"experimental-malloc>, and since glibc 2.15 by default."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The value of B<M_ARENA_TEST> is not used when B<M_ARENA_MAX> has a nonzero "
"value."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_CHECK_ACTION>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Setting this parameter controls how glibc responds when various kinds of "
"programming errors are detected (e.g., freeing the same pointer twice).  The "
"3 least significant bits (2, 1, and 0) of the value assigned to this "
"parameter determine the glibc behavior, as follows:"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Bit 0"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If this bit is set, then print a one-line message on I<stderr> that provides "
"details about the error.  The message starts with the string \"***\\ glibc "
"detected\\ ***\", followed by the program name, the name of the memory-"
"allocation function in which the error was detected, a brief description of "
"the error, and the memory address where the error was detected."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Bit 1"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If this bit is set, then, after printing any error message specified by bit "
"0, the program is terminated by calling B<abort>(3).  Since glibc 2.4, if "
"bit 0 is also set, then, between printing the error message and aborting, "
"the program also prints a stack trace in the manner of B<backtrace>(3), and "
"prints the process's memory mapping in the style of I</proc/>pidI</maps> "
"(see B<proc>(5))."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Bit 2 (since glibc 2.4)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This bit has an effect only if bit 0 is also set.  If this bit is set, then "
"the one-line message describing the error is simplified to contain just the "
"name of the function where the error was detected and the brief description "
"of the error."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The remaining bits in I<value> are ignored."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Combining the above details, the following numeric values are meaningful for "
"B<M_CHECK_ACTION>:"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<0>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Ignore error conditions; continue execution (with undefined results)."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<1>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Print a detailed error message and continue execution."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<2>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Abort the program."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<3>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Print detailed error message, stack trace, and memory mappings, and abort "
"the program."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<5>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Print a simple error message and continue execution."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<7>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Print simple error message, stack trace, and memory mappings, and abort the "
"program."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Since glibc 2.3.4, the default value for the B<M_CHECK_ACTION> parameter is "
"3.  In glibc 2.3.3 and earlier, the default value is 1."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Using a nonzero B<M_CHECK_ACTION> value can be useful because otherwise a "
"crash may happen much later, and the true cause of the problem is then very "
"hard to track down."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_MMAP_MAX>"
msgstr ""

#.  The following text adapted from comments in the glibc source:
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This parameter specifies the maximum number of allocation requests that may "
"be simultaneously serviced using B<mmap>(2).  This parameter exists because "
"some systems have a limited number of internal tables for use by B<mmap>(2), "
"and using more than a few of them may degrade performance."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The default value is 65,536, a value which has no special significance and "
"which serves only as a safeguard.  Setting this parameter to 0 disables the "
"use of B<mmap>(2)  for servicing large allocation requests."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_MMAP_THRESHOLD>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"For allocations greater than or equal to the limit specified (in bytes) by "
"B<M_MMAP_THRESHOLD> that can't be satisfied from the free list, the memory-"
"allocation functions employ B<mmap>(2)  instead of increasing the program "
"break using B<sbrk>(2)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Allocating memory using B<mmap>(2)  has the significant advantage that the "
"allocated memory blocks can always be independently released back to the "
"system.  (By contrast, the heap can be trimmed only if memory is freed at "
"the top end.)  On the other hand, there are some disadvantages to the use of "
"B<mmap>(2): deallocated space is not placed on the free list for reuse by "
"later allocations; memory may be wasted because B<mmap>(2)  allocations must "
"be page-aligned; and the kernel must perform the expensive task of zeroing "
"out memory allocated via B<mmap>(2).  Balancing these factors leads to a "
"default setting of 128*1024 for the B<M_MMAP_THRESHOLD> parameter."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The lower limit for this parameter is 0.  The upper limit is "
"B<DEFAULT_MMAP_THRESHOLD_MAX>: 512*1024 on 32-bit systems or "
"I<4*1024*1024*sizeof(long)> on 64-bit systems."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"I<Note>: Nowadays, glibc uses a dynamic mmap threshold by default.  The "
"initial value of the threshold is 128*1024, but when blocks larger than the "
"current threshold and less than or equal to B<DEFAULT_MMAP_THRESHOLD_MAX> "
"are freed, the threshold is adjusted upward to the size of the freed block.  "
"When dynamic mmap thresholding is in effect, the threshold for trimming the "
"heap is also dynamically adjusted to be twice the dynamic mmap threshold.  "
"Dynamic adjustment of the mmap threshold is disabled if any of the "
"B<M_TRIM_THRESHOLD>, B<M_TOP_PAD>, B<M_MMAP_THRESHOLD>, or B<M_MMAP_MAX> "
"parameters is set."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_MXFAST> (since glibc 2.3)"
msgstr ""

#.  The following text adapted from comments in the glibc sources:
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Set the upper limit for memory allocation requests that are satisfied using "
"\"fastbins\".  (The measurement unit for this parameter is bytes.)  Fastbins "
"are storage areas that hold deallocated blocks of memory of the same size "
"without merging adjacent free blocks.  Subsequent reallocation of blocks of "
"the same size can be handled very quickly by allocating from the fastbin, "
"although memory fragmentation and the overall memory footprint of the "
"program can increase."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The default value for this parameter is I<64*sizeof(size_t)/4> (i.e., 64 on "
"32-bit architectures).  The range for this parameter is 0 to "
"I<80*sizeof(size_t)/4>.  Setting B<M_MXFAST> to 0 disables the use of "
"fastbins."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_PERTURB> (since glibc 2.4)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If this parameter is set to a nonzero value, then bytes of allocated memory "
"(other than allocations via B<calloc>(3))  are initialized to the complement "
"of the value in the least significant byte of I<value>, and when allocated "
"memory is released using B<free>(3), the freed bytes are set to the least "
"significant byte of I<value>.  This can be useful for detecting errors where "
"programs incorrectly rely on allocated memory being initialized to zero, or "
"reuse values in memory that has already been freed."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The default value for this parameter is 0."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_TOP_PAD>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This parameter defines the amount of padding to employ when calling "
"B<sbrk>(2)  to modify the program break.  (The measurement unit for this "
"parameter is bytes.)  This parameter has an effect in the following "
"circumstances:"
msgstr ""

#. type: IP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "\\[bu]"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When the program break is increased, then B<M_TOP_PAD> bytes are added to "
"the B<sbrk>(2)  request."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When the heap is trimmed as a consequence of calling B<free>(3)  (see the "
"discussion of B<M_TRIM_THRESHOLD>)  this much free space is preserved at the "
"top of the heap."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"In either case, the amount of padding is always rounded to a system page "
"boundary."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Modifying B<M_TOP_PAD> is a trade-off between increasing the number of "
"system calls (when the parameter is set low)  and wasting unused memory at "
"the top of the heap (when the parameter is set high)."
msgstr ""

#.  DEFAULT_TOP_PAD in glibc source
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "The default value for this parameter is 128*1024."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<M_TRIM_THRESHOLD>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"When the amount of contiguous free memory at the top of the heap grows "
"sufficiently large, B<free>(3)  employs B<sbrk>(2)  to release this memory "
"back to the system.  (This can be useful in programs that continue to "
"execute for a long period after freeing a significant amount of memory.)  "
"The B<M_TRIM_THRESHOLD> parameter specifies the minimum size (in bytes) that "
"this block of memory must reach before B<sbrk>(2)  is used to trim the heap."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The default value for this parameter is 128*1024.  Setting "
"B<M_TRIM_THRESHOLD> to -1 disables trimming completely."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"Modifying B<M_TRIM_THRESHOLD> is a trade-off between increasing the number "
"of system calls (when the parameter is set low)  and wasting unused memory "
"at the top of the heap (when the parameter is set high)."
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Environment variables"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A number of environment variables can be defined to modify some of the same "
"parameters as are controlled by B<mallopt>().  Using these variables has the "
"advantage that the source code of the program need not be changed.  To be "
"effective, these variables must be defined before the first call to a memory-"
"allocation function.  (If the same parameters are adjusted via B<mallopt>(), "
"then the B<mallopt>()  settings take precedence.)  For security reasons, "
"these variables are ignored in set-user-ID and set-group-ID programs."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The environment variables are as follows (note the trailing underscore at "
"the end of the name of some variables):"
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_ARENA_MAX>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_ARENA_MAX>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_ARENA_TEST>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_ARENA_TEST>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_CHECK_>"
msgstr ""

#.  On glibc 2.12/x86, a simple malloc()+free() loop is about 70% slower
#.  when MALLOC_CHECK_ was set.
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"This environment variable controls the same parameter as B<mallopt>()  "
"B<M_CHECK_ACTION>.  If this variable is set to a nonzero value, then a "
"special implementation of the memory-allocation functions is used.  (This is "
"accomplished using the B<malloc_hook>(3)  feature.)  This implementation "
"performs additional error checking, but is slower than the standard set of "
"memory-allocation functions.  (This implementation does not detect all "
"possible errors; memory leaks can still occur.)"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The value assigned to this environment variable should be a single digit, "
"whose meaning is as described for B<M_CHECK_ACTION>.  Any characters beyond "
"the initial digit are ignored."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"For security reasons, the effect of B<MALLOC_CHECK_> is disabled by default "
"for set-user-ID and set-group-ID programs.  However, if the file I</etc/suid-"
"debug> exists (the content of the file is irrelevant), then B<MALLOC_CHECK_> "
"also has an effect for set-user-ID and set-group-ID programs."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_MMAP_MAX_>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_MMAP_MAX>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_MMAP_THRESHOLD_>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_MMAP_THRESHOLD>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_PERTURB_>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_PERTURB>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_TRIM_THRESHOLD_>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_TRIM_THRESHOLD>."
msgstr ""

#. type: TP
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "B<MALLOC_TOP_PAD_>"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Controls the same parameter as B<mallopt>()  B<M_TOP_PAD>."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "RETURN VALUE"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "On success, B<mallopt>()  returns 1.  On error, it returns 0."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "ERRORS"
msgstr ""

#. #-#-#-#-#  archlinux: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  debian-bookworm: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  .SH VERSIONS
#.  Available already in glibc 2.0, possibly earlier
#. type: Plain text
#. #-#-#-#-#  debian-unstable: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  fedora-40: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  fedora-rawhide: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  mageia-cauldron: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  opensuse-leap-15-6: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#. #-#-#-#-#  opensuse-tumbleweed: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "On error, I<errno> is I<not> set."
msgstr ""

#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "VERSIONS"
msgstr ""

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A similar function exists on many System V derivatives, but the range of "
"values for I<param> varies across systems.  The SVID defined options "
"B<M_MXFAST>, B<M_NLBLKS>, B<M_GRAIN>, and B<M_KEEP>, but only the first of "
"these is implemented in glibc."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "STANDARDS"
msgstr ""

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "None."
msgstr ""

#. type: SH
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "HISTORY"
msgstr ""

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-leap-15-6 opensuse-tumbleweed
msgid "glibc 2.0."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "BUGS"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid "Specifying an invalid value for I<param> does not generate an error."
msgstr ""

#. #-#-#-#-#  archlinux: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  debian-bookworm: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  http://sources.redhat.com/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  debian-unstable: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  fedora-40: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  fedora-rawhide: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  mageia-cauldron: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  opensuse-leap-15-6: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#. #-#-#-#-#  opensuse-tumbleweed: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . This looks buggy:
#.  setting the M_MXFAST limit rounds up:    (s + SIZE_SZ) & ~MALLOC_ALIGN_MASK)
#.  malloc requests are rounded up:
#.     (req) + SIZE_SZ + MALLOC_ALIGN_MASK) & ~MALLOC_ALIGN_MASK
#.  https://www.sourceware.org/bugzilla/show_bug.cgi?id=12129
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"A calculation error within the glibc implementation means that a call of the "
"form:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "mallopt(M_MXFAST, n)\n"
msgstr ""

#.  Bins are multiples of 2 * sizeof(size_t) + sizeof(size_t)
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"does not result in fastbins being employed for all allocations of size up to "
"I<n>.  To ensure desired results, I<n> should be rounded up to the next "
"multiple greater than or equal to I<(2k+1)*sizeof(size_t)>, where I<k> is an "
"integer."
msgstr ""

#. #-#-#-#-#  archlinux: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  debian-bookworm: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . http://sources.redhat.com/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  debian-unstable: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  fedora-40: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  fedora-rawhide: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  mageia-cauldron: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  opensuse-leap-15-6: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#. #-#-#-#-#  opensuse-tumbleweed: mallopt.3.pot (PACKAGE VERSION)  #-#-#-#-#
#.  FIXME . https://www.sourceware.org/bugzilla/show_bug.cgi?id=12140
#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"If B<mallopt>()  is used to set B<M_PERTURB>, then, as expected, the bytes "
"of allocated memory are initialized to the complement of the byte in "
"I<value>, and when that memory is freed, the bytes of the region are "
"initialized to the byte specified in I<value>.  However, there is an off-by-"
"I<sizeof(size_t)> error in the implementation: instead of initializing "
"precisely the block of memory being freed by the call I<free(p)>, the block "
"starting at I<p+sizeof(size_t)> is initialized."
msgstr ""

#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "EXAMPLES"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The program below demonstrates the use of B<M_CHECK_ACTION>.  If the program "
"is supplied with an (integer) command-line argument, then that argument is "
"used to set the B<M_CHECK_ACTION> parameter.  The program then allocates a "
"block of memory, and frees it twice (an error)."
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following shell session shows what happens when we run this program "
"under glibc, with the default value for B<M_CHECK_ACTION>:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out>\n"
"main(): returned from first free() call\n"
"*** glibc detected *** ./a.out: double free or corruption (top): 0x09d30008 ***\n"
"======= Backtrace: =========\n"
"/lib/libc.so.6(+0x6c501)[0x523501]\n"
"/lib/libc.so.6(+0x6dd70)[0x524d70]\n"
"/lib/libc.so.6(cfree+0x6d)[0x527e5d]\n"
"\\&./a.out[0x80485db]\n"
"/lib/libc.so.6(__libc_start_main+0xe7)[0x4cdce7]\n"
"\\&./a.out[0x8048471]\n"
"======= Memory map: ========\n"
"001e4000-001fe000 r-xp 00000000 08:06 1083555    /lib/libgcc_s.so.1\n"
"001fe000-001ff000 r--p 00019000 08:06 1083555    /lib/libgcc_s.so.1\n"
"[some lines omitted]\n"
"b7814000-b7817000 rw-p 00000000 00:00 0\n"
"bff53000-bff74000 rw-p 00000000 00:00 0          [stack]\n"
"Aborted (core dumped)\n"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The following runs show the results when employing other values for "
"B<M_CHECK_ACTION>:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<./a.out 1>             # Diagnose error and continue\n"
"main(): returned from first free() call\n"
"*** glibc detected *** ./a.out: double free or corruption (top): 0x09cbe008 ***\n"
"main(): returned from second free() call\n"
"$ B<./a.out 2>             # Abort without error message\n"
"main(): returned from first free() call\n"
"Aborted (core dumped)\n"
"$ B<./a.out 0>             # Ignore error and continue\n"
"main(): returned from first free() call\n"
"main(): returned from second free() call\n"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"The next run shows how to set the same parameter using the B<MALLOC_CHECK_> "
"environment variable:"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid ""
"$ B<MALLOC_CHECK_=1 ./a.out>\n"
"main(): returned from first free() call\n"
"*** glibc detected *** ./a.out: free(): invalid pointer: 0x092c2008 ***\n"
"main(): returned from second free() call\n"
msgstr ""

#. type: SS
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "Program source"
msgstr ""

#. type: Plain text
#: archlinux debian-unstable fedora-40 fedora-rawhide mageia-cauldron
#: opensuse-tumbleweed
#, no-wrap
msgid ""
"#include E<lt>malloc.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
"\\&\n"
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
"    char *p;\n"
"\\&\n"
"    if (argc E<gt> 1) {\n"
"        if (mallopt(M_CHECK_ACTION, atoi(argv[1])) != 1) {\n"
"            fprintf(stderr, \"mallopt() failed\");\n"
"            exit(EXIT_FAILURE);\n"
"        }\n"
"    }\n"
"\\&\n"
"    p = malloc(1000);\n"
"    if (p == NULL) {\n"
"        fprintf(stderr, \"malloc() failed\");\n"
"        exit(EXIT_FAILURE);\n"
"    }\n"
"\\&\n"
"    free(p);\n"
"    printf(\"%s(): returned from first free() call\\en\", __func__);\n"
"\\&\n"
"    free(p);\n"
"    printf(\"%s(): returned from second free() call\\en\", __func__);\n"
"\\&\n"
"    exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""

#.  SRC END
#. type: SH
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
#, no-wrap
msgid "SEE ALSO"
msgstr ""

#. type: Plain text
#: archlinux debian-bookworm debian-unstable fedora-40 fedora-rawhide
#: mageia-cauldron opensuse-leap-15-6 opensuse-tumbleweed
msgid ""
"B<mmap>(2), B<sbrk>(2), B<mallinfo>(3), B<malloc>(3), B<malloc_hook>(3), "
"B<malloc_info>(3), B<malloc_stats>(3), B<malloc_trim>(3), B<mcheck>(3), "
"B<mtrace>(3), B<posix_memalign>(3)"
msgstr ""

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "2023-02-05"
msgstr ""

#. type: TH
#: debian-bookworm
#, no-wrap
msgid "Linux man-pages 6.03"
msgstr ""

#.  .SH NOTES
#. type: Plain text
#: debian-bookworm
msgid ""
"This function is not specified by POSIX or the C standards.  A similar "
"function exists on many System V derivatives, but the range of values for "
"I<param> varies across systems.  The SVID defined options B<M_MXFAST>, "
"B<M_NLBLKS>, B<M_GRAIN>, and B<M_KEEP>, but only the first of these is "
"implemented in glibc."
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"#include E<lt>malloc.hE<gt>\n"
"#include E<lt>stdio.hE<gt>\n"
"#include E<lt>stdlib.hE<gt>\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"int\n"
"main(int argc, char *argv[])\n"
"{\n"
"    char *p;\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    if (argc E<gt> 1) {\n"
"        if (mallopt(M_CHECK_ACTION, atoi(argv[1])) != 1) {\n"
"            fprintf(stderr, \"mallopt() failed\");\n"
"            exit(EXIT_FAILURE);\n"
"        }\n"
"    }\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    p = malloc(1000);\n"
"    if (p == NULL) {\n"
"        fprintf(stderr, \"malloc() failed\");\n"
"        exit(EXIT_FAILURE);\n"
"    }\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    free(p);\n"
"    printf(\"%s(): returned from first free() call\\en\", __func__);\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    free(p);\n"
"    printf(\"%s(): returned from second free() call\\en\", __func__);\n"
msgstr ""

#. type: Plain text
#: debian-bookworm opensuse-leap-15-6
#, no-wrap
msgid ""
"    exit(EXIT_SUCCESS);\n"
"}\n"
msgstr ""

#. type: TH
#: fedora-40 mageia-cauldron
#, no-wrap
msgid "2023-10-31"
msgstr ""

#. type: TH
#: fedora-40 mageia-cauldron
#, no-wrap
msgid "Linux man-pages 6.06"
msgstr ""

#. type: TH
#: fedora-rawhide
#, no-wrap
msgid "2024-02-26"
msgstr ""

#. type: TH
#: fedora-rawhide
#, no-wrap
msgid "Linux man-pages 6.7"
msgstr ""

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "2023-03-30"
msgstr ""

#. type: TH
#: opensuse-leap-15-6
#, no-wrap
msgid "Linux man-pages 6.04"
msgstr ""

#. type: TH
#: opensuse-tumbleweed
#, no-wrap
msgid "Linux man-pages (unreleased)"
msgstr ""