CMake files are configured for Homebrew LLVM on macOS.
Memory leak test using LeakSanitizer
% cat memory-leak.c
#include <stdlib.h>
void *p;
int main() {
p = malloc(7);
p = 0; // The memory is leaked here.
return 0;
}
% clang -fsanitize=address -g memory-leak.c ; ASAN_OPTIONS=detect_leaks=1 LSAN_OPTIONS=suppressions=lsan.supp ./a.out
=================================================================
==37858==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 7 byte(s) in 1 object(s) allocated from:
#0 0x100edb678 in wrap_malloc+0x8c (libclang_rt.asan_osx_dynamic.dylib:arm64+0x3f678)
#1 0x100ad7ee4 in main memory-leak.c:5
#2 0x100af1084 in start+0x200 (dyld:arm64+0x5084)
#3 0xbf33fffffffffffc (<unknown module>)
-----------------------------------------------------
Suppressions used:
count bytes template
127 4064 realizeClassWithoutSwift
-----------------------------------------------------
SUMMARY: AddressSanitizer: 7 byte(s) leaked in 1 allocation(s).Undefined behavior test using UndefinedBehaviorSanitizer.
% cat ub-test.c
int main(int argc, char **argv)
{
int k = 0x7fffffff;
k += argc;
return 0;
}
% clang -fsanitize=undefined -g -fno-omit-frame-pointer ub-test.c ; UBSAN_OPTIONS=print_stacktrace=1 ./a.out
ub-test.c:4:7: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
#0 0x10082ff70 in main ub-test.c:4
#1 0x100b99088 in start+0x204 (dyld:arm64+0x5088) (BuildId: 75627683a78032adae34cf86dd23a26b32000000200000000100000000050c00)
#2 0xdc107ffffffffffc (<unknown module>)
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ub-test.c:4:7 in