r181940 - Objective-C: More cases of -Wsign-conversion not
Fariborz Jahanian
fjahanian at apple.com
Wed May 15 15:25:03 PDT 2013
Author: fjahanian
Date: Wed May 15 17:25:03 2013
New Revision: 181940
URL: http://llvm.org/viewvc/llvm-project?rev=181940&view=rev
Log:
Objective-C: More cases of -Wsign-conversion not
working on new Objective-C array subscripting
syntax. // rdar://13855682
Modified:
cfe/trunk/lib/Sema/SemaChecking.cpp
cfe/trunk/test/SemaObjC/sign-conversion.m
Modified: cfe/trunk/lib/Sema/SemaChecking.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Sema/SemaChecking.cpp?rev=181940&r1=181939&r2=181940&view=diff
==============================================================================
--- cfe/trunk/lib/Sema/SemaChecking.cpp (original)
+++ cfe/trunk/lib/Sema/SemaChecking.cpp Wed May 15 17:25:03 2013
@@ -5135,11 +5135,13 @@ void AnalyzeImplicitConversions(Sema &S,
// Now continue drilling into this expression.
if (PseudoObjectExpr * POE = dyn_cast<PseudoObjectExpr>(E)) {
- Expr *Result = POE->getResultExpr();
- if (const OpaqueValueExpr *OVE = dyn_cast_or_null<OpaqueValueExpr>(Result))
- return AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC);
+ if (POE->getResultExpr())
+ E = POE->getResultExpr();
}
+ if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(E))
+ return AnalyzeImplicitConversions(S, OVE->getSourceExpr(), CC);
+
// Skip past explicit casts.
if (isa<ExplicitCastExpr>(E)) {
E = cast<ExplicitCastExpr>(E)->getSubExpr()->IgnoreParenImpCasts();
Modified: cfe/trunk/test/SemaObjC/sign-conversion.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/SemaObjC/sign-conversion.m?rev=181940&r1=181939&r2=181940&view=diff
==============================================================================
--- cfe/trunk/test/SemaObjC/sign-conversion.m (original)
+++ cfe/trunk/test/SemaObjC/sign-conversion.m Wed May 15 17:25:03 2013
@@ -1,21 +1,39 @@
// RUN: %clang_cc1 -fsyntax-only -verify -Wsign-conversion %s
// rdar://13855394
+typedef unsigned int NSUInteger;
+
@interface NSObject
- new;
+- (NSUInteger)hash;
@end
@interface X : NSObject
- at property unsigned int uint;
+ at property NSUInteger uint;
@end
- at implementation X
- at synthesize uint;
+ at interface NSArray : NSObject
+
+- (NSUInteger)count;
+- (id)objectAtIndex:(NSUInteger)index;
+- (id)objectAtIndexedSubscript:(NSUInteger)index;
+
@end
void foo() {
X *x = [X new];
signed int sint = -1;
- [x setUint:sint]; // expected-warning {{implicit conversion changes signedness: 'int' to 'unsigned int'}}
- x.uint = sint; // expected-warning {{implicit conversion changes signedness: 'int' to 'unsigned int'}}
+ [x setUint:sint]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}}
+ x.uint = sint; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}}
+}
+
+// rdar://13855682
+void Test1() {
+signed int si = -1;
+NSArray *array;
+
+(void)((NSObject*)array[si]).hash; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}}
+
+(void)[((NSObject*)array[si]) hash]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}}
+(void)array[si]; // expected-warning {{implicit conversion changes signedness: 'int' to 'NSUInteger'}}
}
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