1 // RUN: %clang_hwasan -O1 %s -o %t
2 // RUN: %env_hwasan_opts=stack_history_size=2048 not %run %t 2045 2>&1 | FileCheck %s --check-prefix=YES
3 // RUN: %env_hwasan_opts=stack_history_size=2048 not %run %t 2047 2>&1 | FileCheck %s --check-prefix=NO
5 // Run the same tests as above, but using the __hwasan_add_frame_record libcall.
6 // The output should be the exact same.
7 // RUN: %clang_hwasan -O1 %s -o %t -mllvm -hwasan-record-stack-history=libcall
8 // RUN: %env_hwasan_opts=stack_history_size=2048 not %run %t 2045 2>&1 | FileCheck %s --check-prefix=YES
9 // RUN: %env_hwasan_opts=stack_history_size=2048 not %run %t 2047 2>&1 | FileCheck %s --check-prefix=NO
11 // REQUIRES: stable-runtime
13 // Stack histories are currently not recorded on x86.
18 void USE(void *x
) { // pretend_to_do_something(void *x)
19 __asm__
__volatile__("" : : "r" (x
) : "memory");
22 volatile int four
= 4;
23 __attribute__((noinline
)) void FUNC0() { int x
[4]; USE(&x
[0]); }
24 __attribute__((noinline
)) void FUNC() { int x
[4]; USE(&x
[0]); }
25 __attribute__((noinline
)) void OOB() { int x
[4]; x
[four
] = 0; USE(&x
[0]); }
27 int main(int argc
, char **argv
) {
28 int X
= argc
== 2 ? atoi(argv
[1]) : 10;
29 // FUNC0 is X+2's element of the ring buffer.
30 // If runtime buffer size is less than it, FUNC0 record will be lost.
32 for (int i
= 0; i
< X
; ++i
)
34 // Make at least one call to OOB where base tag != 0 so that the bug is caught
40 // YES: Previously allocated frames
45 // NO: Previously allocated frames