diff options
| author | Mark Wielaard <[email protected]> | 2023-02-21 13:12:38 +0100 |
|---|---|---|
| committer | Mark Wielaard <[email protected]> | 2023-02-21 13:12:38 +0100 |
| commit | c9c055a6949702af57e46f4eac3355d4a4f94c5d (patch) | |
| tree | c3abb1ef850c9515c1f7749528e70adfc3644a44 /configure.ac | |
| parent | eb79a7bd87adc51dae77eb8d5ec37ad58ec71feb (diff) | |
configure: Check for and -Wuse-after-free=3 when available
gcc already includes -Wuse-after-free=2 in -Wall. -Wuse-after-free=3
also warns for indeterminate pointers in equality expressions.
Signed-off-by: Mark Wielaard <[email protected]>
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 4c8a4c31..142a89f6 100644 --- a/configure.ac +++ b/configure.ac @@ -2,7 +2,7 @@ dnl Process this file with autoconf to produce a configure script. dnl Configure input file for elfutils. -*-autoconf-*- dnl dnl Copyright (C) 1996-2019 Red Hat, Inc. -dnl Copyright (C) 2022 Mark J. Wielaard <[email protected]> +dnl Copyright (C) 2022, 2023 Mark J. Wielaard <[email protected]> dnl dnl This file is part of elfutils. dnl @@ -618,6 +618,15 @@ CFLAGS="$old_CFLAGS"]) AM_CONDITIONAL(HAVE_NO_PACKED_NOT_ALIGNED_WARNING, [test "x$ac_cv_no_packed_not_aligned" != "xno"]) +AC_CACHE_CHECK([whether the compiler accepts -Wuse-after-free=3], ac_cv_use_after_free3, [dnl +old_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Wuse-after-free=3 -Werror" +AC_COMPILE_IFELSE([AC_LANG_SOURCE([])], + ac_cv_use_after_free3=yes, ac_cv_use_after_free3=no) +CFLAGS="$old_CFLAGS"]) +AM_CONDITIONAL(HAVE_USE_AFTER_FREE3_WARNING, + [test "x$ac_cv_use_after_free3" != "xno"]) + AC_CACHE_CHECK([whether the compiler accepts -fno-addrsig], ac_cv_fno_addrsig, [dnl old_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -fno-addrsig -Werror" |