vendor/compiler-rt/compiler-rt-r224034

1 files changed, 33 insertions, 0 deletions

diff --git a/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc b/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc
new file mode 100644
index 000000000000..5332c992a0db
--- /dev/null
+++ b/test/asan/TestCases/Linux/asan-asm-stacktrace-test.cc
@@ -0,0 +1,33 @@
+// 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;
+}