1// RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1
2// RUN: FileCheck --check-prefixes=CHECK,CHECK-SHORT %s < %t.out
3
4// RUN: %env_tysan_opts=print_stacktrace=1 %run %t >%t.out 2>&1
5// RUN: FileCheck --check-prefixes=CHECK,CHECK-LONG %s < %t.out
6
7float *P;
8void zero_array() {
9 int i;
10 for (i = 0; i < 1; ++i)
11 P[i] = 0.0f;
12 // CHECK: ERROR: TypeSanitizer: type-aliasing-violation
13 // CHECK: WRITE of size 4 at {{.*}} with type float accesses an existing object of type p1 float
14 // CHECK: {{#0 0x.* in zero_array .*print_stacktrace.c:}}[[@LINE-3]]
15 // CHECK-SHORT-NOT: {{#1 0x.* in main .*print_stacktrace.c}}
16 // CHECK-LONG-NEXT: {{#1 0x.* in main .*print_stacktrace.c}}
17}
18
19int main() {
20 P = (float *)&P;
21 zero_array();
22}
23

source code of compiler-rt/test/tysan/print_stacktrace.c