[analyzer] Test objC boxing.

llvm-svn: 156660

clang/test/Analysis/objc-boxing.m

@@ -0,0 +1,44 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core,unix.Malloc -analyzer-store=region -verify %s
+
+typedef signed char BOOL;
+typedef long NSInteger;
+typedef unsigned long NSUInteger;
+@interface NSString @end
+@interface NSString (NSStringExtensionMethods)
++ (id)stringWithUTF8String:(const char *)nullTerminatedCString;
+@end
+
+@interface NSNumber
++ (NSNumber *)numberWithChar:(char)value;
++ (NSNumber *)numberWithUnsignedChar:(unsigned char)value;
++ (NSNumber *)numberWithShort:(short)value;
++ (NSNumber *)numberWithUnsignedShort:(unsigned short)value;
++ (NSNumber *)numberWithInt:(int)value;
++ (NSNumber *)numberWithUnsignedInt:(unsigned int)value;
++ (NSNumber *)numberWithLong:(long)value;
++ (NSNumber *)numberWithUnsignedLong:(unsigned long)value;
++ (NSNumber *)numberWithLongLong:(long long)value;
++ (NSNumber *)numberWithUnsignedLongLong:(unsigned long long)value;
++ (NSNumber *)numberWithFloat:(float)value;
++ (NSNumber *)numberWithDouble:(double)value;
++ (NSNumber *)numberWithBool:(BOOL)value;
++ (NSNumber *)numberWithInteger:(NSInteger)value ;
++ (NSNumber *)numberWithUnsignedInteger:(NSUInteger)value ;
+@end
+
+
+extern char *strdup(const char *str);
+
+id constant_string() {
+    return @("boxed constant string.");
+}
+
+id dynamic_string() {
+    return @(strdup("boxed dynamic string")); // expected-warning{{Memory is never released; potential leak}}
+}
+
+id const_char_pointer(int *x) {
+  if (x)
+    return @(3);
+  return @(*x); // expected-warning {{Dereference of null pointer (loaded from variable 'x')}}
+}