Vendor import of clang release_39 branch r276489:vendor/clang/clang-release_39-r276489

https://llvm.org/svn/llvm-project/cfe/branches/release_39@276489

1 files changed, 38 insertions, 0 deletions

diff --git a/test/Analysis/bstring.cpp b/test/Analysis/bstring.cpp
new file mode 100644
index 000000000000..0b4e7e94f00b
--- /dev/null
+++ b/test/Analysis/bstring.cpp
@@ -0,0 +1,38 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.cstring,alpha.unix.cstring,debug.ExprInspection -analyzer-store=region -verify %s
+
+#include "Inputs/system-header-simulator-cxx.h"
+#include "Inputs/system-header-simulator-for-malloc.h"
+
+void clang_analyzer_eval(int);
+
+int *testStdCopyInvalidatesBuffer(std::vector<int> v) {
+  int n = v.size();
+  int *buf = (int *)malloc(n * sizeof(int));
+
+  buf[0] = 66;
+
+  // Call to copy should invalidate buf.
+  std::copy(v.begin(), v.end(), buf);
+
+  int i = buf[0];
+
+  clang_analyzer_eval(i == 66); // expected-warning {{UNKNOWN}}
+
+  return buf;
+}
+
+int *testStdCopyBackwardInvalidatesBuffer(std::vector<int> v) {
+  int n = v.size();
+  int *buf = (int *)malloc(n * sizeof(int));
+  
+  buf[0] = 66;
+
+  // Call to copy_backward should invalidate buf.
+  std::copy_backward(v.begin(), v.end(), buf + n);
+
+  int i = buf[0];
+
+  clang_analyzer_eval(i == 66); // expected-warning {{UNKNOWN}}
+
+  return buf;
+}