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Silence -Wstack-protector warnings from Ubuntu gcc 13 and 14.

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* m4/more-warnings.m4 (gt_MORE_WARNINGS): Silence -Wstack-protector also
for newer gcc versions.
This commit is contained in:
Bruno Haible 2024-12-12 10:40:53 +01:00
parent 96b2de2a0b
commit f2a12f3240
1 changed files with 7 additions and 6 deletions
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13
m4/more-warnings.m4
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@ -1,5 +1,5 @@
# more-warnings.m4
# serial 3 (gettext-0.23)
# serial 4 (gettext-0.24)
dnl Copyright (C) 2023-2024 Free Software Foundation, Inc.
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License. As a special exception to the GNU General
@ -136,17 +136,18 @@ AS_HELP_STRING([[--disable-more-warnings]], [obey exactly the warning options sp
dnl that the compiler could often infer and which have little effect on the
dnl performance of the generated code.
nw="$nw -Wsuggest-attribute=cold"
dnl With GCC 11 and older, there warnings are pointless:
dnl With GCC 11 and older and Ubuntu GCC, these warnings are pointless:
dnl "warning: stack protector not protecting local variables: variable
dnl length buffer [-Wstack-protector]", "[-Wanalyzer-use-after-free],
dnl "[-Wanalyzer-free-of-non-heap]".
dnl length buffer [-Wstack-protector]".
nw="$nw -Wstack-protector"
dnl With GCC 11 and older, these warnings are pointless:
dnl "[-Wanalyzer-use-after-free], "[-Wanalyzer-free-of-non-heap]".
AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
#if __GNUC__ > 11
#error "You are lucky"
#endif
]])],
[nw="$nw -Wstack-protector"
nw="$nw -Wanalyzer-use-after-free -Wanalyzer-free-of-non-heap"
[nw="$nw -Wanalyzer-use-after-free -Wanalyzer-free-of-non-heap"
])
dnl Setup the list of meaningful warning options for the C compiler.