1 // RUN: %clangxx_asan -O0 %s -o %t 2>&1 2 // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX 3 4 // Also works if no malloc context is available. 5 // RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s 6 // RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s 7 8 // RUN: %clangxx_asan -O0 -fsanitize-recover=address %s -o %t 2>&1 9 // RUN: %env_asan_opts=halt_on_error=false %run %t 2>&1 | FileCheck %s --check-prefix CHECK-RECOVER 10 11 // XFAIL: arm-linux-gnueabi 12 // XFAIL: armv7l-unknown-linux-gnueabihf 13 14 #include <stdlib.h> 15 #include <string.h> 16 int main(int argc, char **argv) { 17 char *x = (char*)malloc(10 * sizeof(char)); 18 memset(x, 0, 10); 19 int res = x[argc]; 20 free(x); 21 free(x + argc - 1); // BOOM 22 // CHECK: AddressSanitizer: attempting double-free{{.*}}in thread T0 23 // CHECK: #0 0x{{.*}} in {{.*}}free 24 // CHECK: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-3]] 25 // CHECK: freed by thread T0 here: 26 // MALLOC-CTX: #0 0x{{.*}} in {{.*}}free 27 // MALLOC-CTX: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-7]] 28 // CHECK: allocated by thread T0 here: 29 // MALLOC-CTX: double-free.cc:[[@LINE-12]] 30 // CHECK-RECOVER: AddressSanitizer: attempting double-free{{.*}}in thread T0 31 // CHECK-RECOVER-NOT: AddressSanitizer CHECK failed: 32 return res; 33 } 34
