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Disable -fsanitize=function on Clang 17

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Closes GH-12642
This commit is contained in:
Ilija Tovilo 2023-11-09 20:44:30 +01:00
parent 7440a1bd1f
commit ca22505c8c
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1 changed files with 17 additions and 0 deletions
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17
configure.ac
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@ -1581,6 +1581,23 @@ if test "$PHP_UNDEFINED_SANITIZER" = "yes"; then
CFLAGS="$CFLAGS -fno-sanitize=object-size"
CXXFLAGS="$CFLAGS -fno-sanitize=object-size"
])
dnl Clang 17 adds stricter function pointer compatibility checks where pointer args cannot be
dnl cast to void*. In that case, set -fno-sanitize=function.
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-sanitize-recover=undefined"
AC_RUN_IFELSE([AC_LANG_SOURCE([[
void foo(char *string) {}
int main(void) {
void (*f)(void *) = (void (*)(void *))foo;
f("foo");
}
]])],,[ubsan_needs_no_function=yes],)
CFLAGS="$OLD_CFLAGS"
if test "$ubsan_needs_no_function" = yes; then
CFLAGS="$CFLAGS -fno-sanitize=function"
CXXFLAGS="$CFLAGS -fno-sanitize=function"
fi
], [AC_MSG_ERROR([UndefinedBehaviorSanitizer is not available])])
fi