[ASan] Fix https://code.google.com/p/address-sanitizer/issues/detail?id=274

by ignoring globals from __TEXT,__cstring,cstring_literals during instrumenation.
Add a regression test.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@203916 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 23 insertions, 0 deletions

diff --git a/test/asan/TestCases/Darwin/cstring_literals_regtest.mm b/test/asan/TestCases/Darwin/cstring_literals_regtest.mm
new file mode 100644
index 000000000..1bb696c47
--- /dev/null
+++ b/test/asan/TestCases/Darwin/cstring_literals_regtest.mm
@@ -0,0 +1,23 @@
+// Regression test for
+// https://code.google.com/p/address-sanitizer/issues/detail?id=274.
+
+// RUN: %clang_asan %s -framework Foundation -o %t
+// RUN: %t 2>&1 | FileCheck %s
+#import <Foundation/Foundation.h>
+
+#include <stdio.h>
+
+int main() {
+  NSString* version_file = @"MAJOR=35\n";
+  int major = 0, minor = 0, build = 0, patch = 0;
+  NSScanner* scanner = [NSScanner scannerWithString:version_file];
+  NSString *res = nil;
+  if ([scanner scanString:@"MAJOR=" intoString:nil] &&
+      [scanner scanInt:&major]) {
+    res = [NSString stringWithFormat:@"%d.%d.%d.%d",
+           major, minor, build, patch];
+  }
+  printf("%s\n", [res UTF8String]);
+  // CHECK: 35.0.0.0
+  return 0;
+}