Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/test/Analysis/complex.c b/clang/test/Analysis/complex.c
new file mode 100644
index 0000000..c118a61
--- /dev/null
+++ b/clang/test/Analysis/complex.c
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=basic -verify -Wno-unreachable-code -ffreestanding %s
+// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=range -verify -Wno-unreachable-code -ffreestanding %s
+
+#include <stdint.h>
+
+void f1(int * p) {
+  
+  // This branch should be infeasible
+  // because __imag__ p is 0.
+  if (!p && __imag__ (intptr_t) p)
+    *p = 1; // no-warning
+
+  // If p != 0 then this branch is feasible; otherwise it is not.
+  if (__real__ (intptr_t) p)
+    *p = 1; // no-warning
+    
+  *p = 2; // expected-warning{{Dereference of null pointer}}
+}