| // Check that a stack unwinding algorithm works corretly even with the assembly |
| // instrumentation. |
| |
| // REQUIRES: x86_64-supported-target |
| // RUN: %clangxx_asan -g -O1 %s -fno-inline-functions -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -mllvm -asan-instrument-assembly -o %t && not %run %t 2>&1 | FileCheck %s |
| // RUN: %clangxx_asan -g -O1 %s -fno-inline-functions -fomit-frame-pointer -momit-leaf-frame-pointer -mllvm -asan-instrument-assembly -o %t && not %run %t 2>&1 | FileCheck %s |
| // RUN: %clangxx_asan -g0 -O1 %s -fno-unwind-tables -fno-asynchronous-unwind-tables -fno-exceptions -fno-inline-functions -fomit-frame-pointer -momit-leaf-frame-pointer -mllvm -asan-instrument-assembly -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nounwind |
| |
| #include <cstddef> |
| |
| // CHECK: READ of size 4 |
| // CHECK-NEXT: {{#0 0x[0-9a-fA-F]+ in foo}} |
| // CHECK-NEXT: {{#1 0x[0-9a-fA-F]+ in main}} |
| |
| // CHECK-nounwind: READ of size 4 |
| // CHECK-nounwind-NEXT: {{#0 0x[0-9a-fA-F]+ in foo}} |
| |
| __attribute__((noinline)) int foo(size_t n, int *buffer) { |
| int r; |
| __asm__("movl (%[buffer], %[n], 4), %[r] \n\t" |
| : [r] "=r"(r) |
| : [buffer] "r"(buffer), [n] "r"(n) |
| : "memory"); |
| return r; |
| } |
| |
| int main() { |
| const size_t n = 16; |
| int *buffer = new int[n]; |
| foo(n, buffer); |
| delete[] buffer; |
| return 0; |
| } |
