diff options
Diffstat (limited to 'compiler-rt/test/tysan/struct-offset-outline.c')
| -rw-r--r-- | compiler-rt/test/tysan/struct-offset-outline.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/compiler-rt/test/tysan/struct-offset-outline.c b/compiler-rt/test/tysan/struct-offset-outline.c new file mode 100644 index 0000000..c84eb2762 --- /dev/null +++ b/compiler-rt/test/tysan/struct-offset-outline.c @@ -0,0 +1,32 @@ +// RUN: %clang_tysan -mllvm -tysan-outline-instrumentation=true -O0 %s -o %t && %run %t >%t.out 2>&1 +// RUN: FileCheck %s < %t.out +// RUN: %clang_tysan -mllvm -tysan-outline-instrumentation=true -mllvm -tysan-verify-outlined-instrumentation=true -O0 %s -o %t && %run %t >%t.out 2>&1 +// RUN: FileCheck %s --check-prefixes='CHECK,CHECK-VERIFY' < %t.out + +#include <stdio.h> +#include <stdlib.h> + +struct X { + int i; + int j; +}; + +int foo(struct X *p, struct X *q) { + q->j = 1; + p->i = 0; + // CHECK: ERROR: TypeSanitizer: type-aliasing-violation + // CHECK-NEXT: WRITE of size 4 at {{.*}} with type int (in X at offset 0) accesses an existing object of type int (in X at offset 4) + // CHECK-NEXT: {{#0 0x.* in foo .*struct-offset-outline.c:}}[[@LINE-3]] + // CHECK-VERIFY-EMPTY: + // CHECK-VERIFY-NEXT: ERROR: TypeSanitizer: type-aliasing-violation + // CHECK-VERIFY-NEXT: WRITE of size 4 at {{.*}} with type int (in X at offset 0) accesses an existing object of type int (in X at offset 4) + // CHECK-VERIFY-NEXT: {{#0 0x.* in foo .*struct-offset-outline.c:}}[[@LINE-7]] + return q->j; +} + +int main() { + unsigned char *p = malloc(3 * sizeof(int)); + printf("%i\n", foo((struct X *)(p + sizeof(int)), (struct X *)p)); +} + +// CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation |