[compiler-rt] r217487 - [asan-assembly-instrumentation] Added end-to-end test for proper stack unwind for functions with inline assembly.

[Yuri Gorshenin]

Author: ygorshenin
Date: Wed Sep 10 05:44:35 2014
New Revision: 217487

URL: http://llvm.org/viewvc/llvm-project?rev=217487&view=rev
Log:
[asan-assembly-instrumentation] Added end-to-end test for proper stack unwind for functions with inline assembly.

Summary: [asan-assembly-instrumentation] Added end-to-end test for proper stack unwind for functions with inline assembly.

Reviewers: eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D5260

Added:
    compiler-rt/trunk/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc

Added: compiler-rt/trunk/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc?rev=217487&view=auto
==============================================================================
--- compiler-rt/trunk/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc (added)
+++ compiler-rt/trunk/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc Wed Sep 10 05:44:35 2014
@@ -0,0 +1,29 @@
+// Check that a stack unwinding algorithm works corretly even with the assembly
+// instrumentation.
+
+// REQUIRES: x86_64-supported-target,i386-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
+
+#include <cstddef>
+
+// CHECK: READ of size 4
+// CHECK: {{#0 0x[0-9a-fA-F]+ in foo}}
+// CHECK: {{#1 0x[0-9a-fA-F]+ in main}}
+
+__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;
+}