diff options
Diffstat (limited to 'gl/m4/gnulib-common.m4')
| -rw-r--r-- | gl/m4/gnulib-common.m4 | 48 |
1 files changed, 35 insertions, 13 deletions
diff --git a/gl/m4/gnulib-common.m4 b/gl/m4/gnulib-common.m4 index 2426eb6..5dd755f 100644 --- a/gl/m4/gnulib-common.m4 +++ b/gl/m4/gnulib-common.m4 @@ -1,5 +1,5 @@ -# gnulib-common.m4 serial 87 -dnl Copyright (C) 2007-2023 Free Software Foundation, Inc. +# gnulib-common.m4 serial 89 +dnl Copyright (C) 2007-2024 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -114,10 +114,14 @@ AC_DEFUN([gl_COMMON_BODY], [ # define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4) #endif -/* Disable GCC -Wpedantic if using __has_c_attribute and this is not C23+. */ -#if (defined __has_c_attribute && _GL_GNUC_PREREQ (4, 6) \ - && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710) -# pragma GCC diagnostic ignored "-Wpedantic" +/* Use __has_c_attribute if available. However, do not use with + pre-C23 GCC, which can issue false positives if -Wpedantic. */ +#if (defined __has_c_attribute \ + && ! (_GL_GNUC_PREREQ (4, 6) \ + && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710)) +# define _GL_HAVE___HAS_C_ATTRIBUTE 1 +#else +# define _GL_HAVE___HAS_C_ATTRIBUTE 0 #endif /* Define if, in a function declaration, the attributes in bracket syntax @@ -242,7 +246,7 @@ AC_DEFUN([gl_COMMON_BODY], [ in C++ also: namespace, class, template specialization. */ #ifndef _GL_ATTRIBUTE_DEPRECATED # ifndef _GL_BRACKET_BEFORE_ATTRIBUTE -# ifdef __has_c_attribute +# if _GL_HAVE___HAS_C_ATTRIBUTE # if __has_c_attribute (__deprecated__) # define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]] # endif @@ -291,7 +295,7 @@ AC_DEFUN([gl_COMMON_BODY], [ /* Applies to: Empty statement (;), inside a 'switch' statement. */ /* Always expands to something. */ #ifndef _GL_ATTRIBUTE_FALLTHROUGH -# ifdef __has_c_attribute +# if _GL_HAVE___HAS_C_ATTRIBUTE # if __has_c_attribute (__fallthrough__) # define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]] # endif @@ -380,7 +384,7 @@ AC_DEFUN([gl_COMMON_BODY], [ # if !defined __apple_build_version__ && __clang_major__ >= 10 # define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] # endif -# elif defined __has_c_attribute +# elif _GL_HAVE___HAS_C_ATTRIBUTE # if __has_c_attribute (__maybe_unused__) # define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]] # endif @@ -411,7 +415,7 @@ AC_DEFUN([gl_COMMON_BODY], [ # if __clang_major__ >= 1000 # define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] # endif -# elif defined __has_c_attribute +# elif _GL_HAVE___HAS_C_ATTRIBUTE # if __has_c_attribute (__nodiscard__) # define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] # endif @@ -466,11 +470,25 @@ AC_DEFUN([gl_COMMON_BODY], [ /* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions. */ /* Applies to: functions. */ +/* After a function's parameter list, this attribute must come first, before + other attributes. */ #ifndef _GL_ATTRIBUTE_NOTHROW -# if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus -# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) +# if defined __cplusplus +# if _GL_GNUC_PREREQ (2, 8) || __clang_major >= 4 +# if __cplusplus >= 201103L +# define _GL_ATTRIBUTE_NOTHROW noexcept (true) +# else +# define _GL_ATTRIBUTE_NOTHROW throw () +# endif +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif # else -# define _GL_ATTRIBUTE_NOTHROW +# if _GL_HAS_ATTRIBUTE (nothrow) +# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__)) +# else +# define _GL_ATTRIBUTE_NOTHROW +# endif # endif #endif @@ -1056,6 +1074,7 @@ AC_DEFUN([gl_CC_GNULIB_WARNINGS], dnl -Wno-pedantic >= 4.8 >= 3.9 dnl -Wno-sign-compare >= 3 >= 3.9 dnl -Wno-sign-conversion >= 4.3 >= 3.9 + dnl -Wno-tautological-out-of-range-compare - >= 3.9 dnl -Wno-type-limits >= 4.3 >= 3.9 dnl -Wno-undef >= 3 >= 3.9 dnl -Wno-unsuffixed-float-constants >= 4.5 @@ -1081,6 +1100,9 @@ AC_DEFUN([gl_CC_GNULIB_WARNINGS], #if __GNUC__ + (__GNUC_MINOR__ >= 8) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3) -Wno-pedantic #endif + #if 3 < __clang_major__ + (9 <= __clang_minor__) + -Wno-tautological-constant-out-of-range-compare + #endif #if __GNUC__ + (__GNUC_MINOR__ >= 3) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3) -Wno-sign-conversion -Wno-type-limits |