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// Check that a stack unwinding algorithm works corretly even with the assembly
// instrumentation.
// REQUIRES: x86_64-target-arch
// 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;
}
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