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scripts: Add fortify checks on installed headers

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The _FORTIFY_SOURCE is used as default by some system compilers,
and there is no way to check if some fortify extension does not
trigger any conformance issue.

Checked on x86_64-linux-gnu.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella 2023-07-19 11:37:01 -03:00
parent 6d457ff36a
commit 30379efad1
1 changed files with 23 additions and 13 deletions
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36
scripts/check-installed-headers.sh
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@ -29,6 +29,9 @@ cxx_modes="-std=c++98 -std=gnu++98 -std=c++11 -std=gnu++11"
# These are probably the most commonly used three.
lib_modes="-D_DEFAULT_SOURCE=1 -D_GNU_SOURCE=1 -D_XOPEN_SOURCE=700"
# Also check for fortify modes, since it might be enabled as default.
fortify_modes="1 2 3"
if [ $# -lt 3 ]; then
echo "usage: $0 c|c++ \"compile command\" header header header..." >&2
exit 2
@ -100,29 +103,36 @@ EOF
echo :: "$header"
for lang_mode in "" $lang_modes; do
for lib_mode in "" $lib_modes; do
echo :::: $lang_mode $lib_mode
if [ -z "$lib_mode" ]; then
expanded_lib_mode='/* default library mode */'
else
expanded_lib_mode=$(echo : $lib_mode | \
sed 's/^: -D/#define /; s/=/ /')
fi
cat >"$cih_test_c" <<EOF
for fortify_mode in "" $fortify_modes; do
echo :::: $lang_mode $lib_mode $fortify_mode
if [ -z "$lib_mode" ]; then
expanded_lib_mode='/* default library mode */'
else
expanded_lib_mode=$(echo : $lib_mode | \
sed 's/^: -D/#define /; s/=/ /')
fi
if [ ! -z $fortify_mode ]; then
fortify_mode="#define _FORTIFY_SOURCE $fortify_mode"
fi
cat >"$cih_test_c" <<EOF
/* These macros may have been defined on the command line. They are
inappropriate for this test. */
#undef _LIBC
#undef _GNU_SOURCE
#undef _FORTIFY_SOURCE
$fortify_mode
/* The library mode is selected here rather than on the command line to
ensure that this selection wins. */
$expanded_lib_mode
#include <$header>
int avoid_empty_translation_unit;
EOF
if $cc_cmd -finput-charset=ascii -fsyntax-only $lang_mode \
"$cih_test_c" 2>&1
then :
else failed=1
fi
if $cc_cmd -finput-charset=ascii -fsyntax-only $lang_mode \
"$cih_test_c" 2>&1
then :
else failed=1
fi
done
done
done
done