1 // RUN: %clangxx_hwasan -O0 %s -o %t && not %env_hwasan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --implicit-check-not=RETURN_FROM_TEST 2 // RUN: %clangxx_hwasan -O3 %s -o %t && not %env_hwasan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --implicit-check-not=RETURN_FROM_TEST 3 // RUN: %clangxx_hwasan -O0 %s -o %t && not %env_hwasan_opts=halt_on_error=0:symbolize=0 %run %t 2>&1 | FileCheck %s --implicit-check-not=RETURN_FROM_TEST --check-prefixes=CHECK,RECOVER 4 5 // UNSUPPORTED: android 6 7 #include <assert.h> 8 #include <errno.h> 9 #include <glob.h> 10 #include <malloc.h> 11 #include <stdio.h> 12 #include <string.h> 13 14 #include <sanitizer/hwasan_interface.h> 15 #include <sanitizer/linux_syscall_hooks.h> 16 17 /* Test the presence of __sanitizer_syscall_ in the tool runtime, and general 18 sanity of their behaviour. */ 19 main(int argc,char * argv[])20int main(int argc, char *argv[]) { 21 // lit.cfg.py currently sets 'disable_allocator_tagging=1' 22 __hwasan_enable_allocator_tagging(); 23 24 char *buf = (char *)malloc(1000); 25 assert(buf != NULL); 26 27 __sanitizer_syscall_pre_recvmsg(0, buf - 1, 0); 28 // CHECK: HWAddressSanitizer: tag-mismatch on address [[PTR:0x[a-f0-9]+]] 29 // CHECK: Cause: heap-buffer-overflow 30 // CHECK: [[PTR]] is located 1 bytes before a 1000-byte region 31 32 free(buf); 33 fprintf(stderr, "RETURN_FROM_TEST\n"); 34 // RECOVER: RETURN_FROM_TEST 35 return 0; 36 } 37