vendor/clang/clang-r72732

1 files changed, 70 insertions, 0 deletions

diff --git a/test/Analysis/misc-ps-region-store.m b/test/Analysis/misc-ps-region-store.m
new file mode 100644
index 000000000000..8c8815ea63eb
--- /dev/null
+++ b/test/Analysis/misc-ps-region-store.m
@@ -0,0 +1,70 @@
+// RUN: clang-cc -analyze -checker-cfref --analyzer-store=region --verify -fblocks %s
+
+typedef struct objc_selector *SEL;
+typedef signed char BOOL;
+typedef int NSInteger;
+typedef unsigned int NSUInteger;
+typedef struct _NSZone NSZone;
+@class NSInvocation, NSMethodSignature, NSCoder, NSString, NSEnumerator;
+@protocol NSObject  - (BOOL)isEqual:(id)object; @end
+@protocol NSCopying  - (id)copyWithZone:(NSZone *)zone; @end
+@protocol NSMutableCopying  - (id)mutableCopyWithZone:(NSZone *)zone; @end
+@protocol NSCoding  - (void)encodeWithCoder:(NSCoder *)aCoder; @end
+@interface NSObject <NSObject> {} - (id)init; @end
+extern id NSAllocateObject(Class aClass, NSUInteger extraBytes, NSZone *zone);
+@interface NSString : NSObject <NSCopying, NSMutableCopying, NSCoding>
+- (NSUInteger)length;
++ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
+@end extern NSString * const NSBundleDidLoadNotification;
+@interface NSAssertionHandler : NSObject {}
++ (NSAssertionHandler *)currentHandler;
+- (void)handleFailureInMethod:(SEL)selector object:(id)object file:(NSString *)fileName lineNumber:(NSInteger)line description:(NSString *)format,...;
+@end
+extern NSString * const NSConnectionReplyMode;
+
+
+//---------------------------------------------------------------------------
+// Test case 'checkaccess_union' differs for region store and basic store.
+// The basic store doesn't reason about compound literals, so the code
+// below won't fire an "uninitialized value" warning.
+//---------------------------------------------------------------------------
+
+// PR 2948 (testcase; crash on VisitLValue for union types)
+// http://llvm.org/bugs/show_bug.cgi?id=2948
+
+void checkaccess_union() {
+  int ret = 0, status;
+  if (((((__extension__ (((union {  // expected-warning {{ Branch condition evaluates to an uninitialized value.}}
+    __typeof (status) __in; int __i;}
+    )
+    {
+      .__in = (status)}
+      ).__i))) & 0xff00) >> 8) == 1)
+        ret = 1;
+}
+
+
+// Check our handling of fields being invalidated by function calls.
+struct test2_struct { int x; int y; char* s; };
+void test2_helper(struct test2_struct* p);
+
+char test2() {
+  struct test2_struct s;
+  test2_help(&s);
+  char *p = 0;
+  
+  if (s.x > 1) {
+    if (s.s != 0) {
+      p = "hello";
+    }
+  }
+  
+  if (s.x > 1) {
+    if (s.s != 0) {
+      return *p;
+    }
+  }
+
+  return 'a';
+}
+