Vendor import of compiler-rt trunk r300422:vendor/compiler-rt/compiler-rt-trunk-r300422

https://llvm.org/svn/llvm-project/compiler-rt/trunk@300422

1 files changed, 33 insertions, 0 deletions

diff --git a/test/asan/TestCases/non-executable-pc.cpp b/test/asan/TestCases/non-executable-pc.cpp
new file mode 100644
index 000000000000..f8adee613b09
--- /dev/null
+++ b/test/asan/TestCases/non-executable-pc.cpp
@@ -0,0 +1,33 @@
+// RUN: %clangxx_asan %s -o %t
+// RUN: not %run %t 0 2>&1 | FileCheck %s
+// RUN: not %run %t n 2>&1 | FileCheck %s -check-prefix=CHECK -check-prefix=NON_EXEC
+
+// Only Linux and FreeBSD list every memory region in MemoryMappingLayout, for now.
+// REQUIRES: linux || freebsd
+
+#include <assert.h>
+
+typedef void void_f();
+int main(int argc, char **argv) {
+  char *array = new char[42];
+  void_f *func;
+  assert(argc > 1);
+  if (argv[1][0] == '0') {
+    func = (void_f *)0x04;
+  } else {
+    assert(argv[1][0] == 'n');
+    func = (void_f *)array;
+  }
+
+  func();
+  // x86 reports the SEGV with both address=X and pc=X.
+  // On PowerPC64 ELFv1, the pointer is taken to be a function-descriptor
+  // pointer out of which three 64-bit quantities are read. This will SEGV, but
+  // the compiler is free to choose the order. As a result, the address is
+  // either X, X+0x8 or X+0x10. The pc is still in main() because it has not
+  // actually made the call when the faulting access occurs.
+  // CHECK: DEADLYSIGNAL
+  // CHECK: {{AddressSanitizer: (SEGV|access-violation).*(address|pc) }}
+  // NON_EXEC: PC is at a non-executable region. Maybe a wild jump?
+  return 0;
+}