Add a test for alloca region extents.

llvm-svn: 111079

1 files changed, 8 insertions, 0 deletions

diff --git a/clang/test/Analysis/outofbound.c b/clang/test/Analysis/outofbound.c
index 9b487300c88..529f0e77b26 100644
--- a/clang/test/Analysis/outofbound.c
+++ b/clang/test/Analysis/outofbound.c
@@ -71,3 +71,11 @@ void sizeof_vla(int a) {
     y[5] = 5; // expected-warning{{out-of-bound}}
   }
 }
+
+void alloca_region(int a) {
+  if (a == 5) {
+    char *x = __builtin_alloca(a);
+    x[4] = 4; // no-warning
+    x[5] = 5; // expected-warning{{out-of-bound}}
+  }
+}