From 29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:21:29 +0200 Subject: Adding upstream version 1:0.1.9998svn3589+dfsg. Signed-off-by: Daniel Baumann --- src/grep/gnulib-tests/test-rawmemchr.c | 92 ++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 src/grep/gnulib-tests/test-rawmemchr.c (limited to 'src/grep/gnulib-tests/test-rawmemchr.c') diff --git a/src/grep/gnulib-tests/test-rawmemchr.c b/src/grep/gnulib-tests/test-rawmemchr.c new file mode 100644 index 0000000..f53f875 --- /dev/null +++ b/src/grep/gnulib-tests/test-rawmemchr.c @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2008-2021 Free Software Foundation, Inc. + * Written by Eric Blake and Bruno Haible + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . */ + +#include + +#include + +#include "signature.h" +SIGNATURE_CHECK (rawmemchr, void *, (void const *, int)); + +#include + +#include "zerosize-ptr.h" +#include "macros.h" + +/* Calculating void * + int is not portable, so this wrapper converts + to char * to make the tests easier to write. */ +#define RAWMEMCHR (char *) rawmemchr + +int +main (void) +{ + size_t n = 0x100000; + char *input = malloc (n + 1); + ASSERT (input); + + input[0] = 'a'; + input[1] = 'b'; + memset (input + 2, 'c', 1024); + memset (input + 1026, 'd', n - 1028); + input[n - 2] = 'e'; + input[n - 1] = 'a'; + input[n] = '\0'; + + /* Basic behavior tests. */ + ASSERT (RAWMEMCHR (input, 'a') == input); + ASSERT (RAWMEMCHR (input, 'b') == input + 1); + ASSERT (RAWMEMCHR (input, 'c') == input + 2); + ASSERT (RAWMEMCHR (input, 'd') == input + 1026); + + ASSERT (RAWMEMCHR (input + 1, 'a') == input + n - 1); + ASSERT (RAWMEMCHR (input + 1, 'e') == input + n - 2); + ASSERT (RAWMEMCHR (input + 1, 0x789abc00 | 'e') == input + n - 2); + + ASSERT (RAWMEMCHR (input, '\0') == input + n); + + /* Alignment tests. */ + { + int i, j; + for (i = 0; i < 32; i++) + { + for (j = 0; j < 256; j++) + input[i + j] = j; + for (j = 0; j < 256; j++) + { + ASSERT (RAWMEMCHR (input + i, j) == input + i + j); + } + } + } + + /* Ensure that no unaligned oversized reads occur. */ + { + char *page_boundary = (char *) zerosize_ptr (); + size_t i; + + if (!page_boundary) + page_boundary = input + 4096; + memset (page_boundary - 512, '1', 511); + page_boundary[-1] = '2'; + for (i = 1; i <= 512; i++) + ASSERT (RAWMEMCHR (page_boundary - i, (i * 0x01010100) | '2') + == page_boundary - 1); + } + + free (input); + + return 0; +} -- cgit v1.2.3