Hi,

gcc.dg/analyzer/ currently has 80 failures on Darwin (both x86_64-apple-darwin and aarch64-apple-darwin). All those come from two issues:

1. Many tests use memset() without including the <string.h> header. We can fix that easily.

2. Other tests fail because of the use of macOS headers, which redefine functions like memcpy and others to “checked”/fortified versions https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104042 Instead of correcting this on a case-by-case basis, add the -D_FORTIFY_SOURCE=0 flag systematically on Darwin.

With that, all 80 failures are silenced and that part of the testsuite is now clean:

# of expected passes 5238
# of expected failures 194
# of unsupported tests 12



OK to commit?
FX