diff options
| author | Hans Wennborg <hans@hanshq.net> | 2017-08-17 16:48:03 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2017-08-17 16:48:03 +0000 |
| commit | f1c97542ff84f0a49cdc2af11cc30d499cd9adba (patch) | |
| tree | 6fc7166fe357352fc47877e05e52c84aab926ccd /test | |
| parent | af145231499333600c48437ed838de2903172704 (diff) | |
Merging r310672:
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r310672 | ahatanak | 2017-08-10 17:06:49 -0700 (Thu, 10 Aug 2017) | 7 lines
[Sema][ObjC] Fix spurious -Wcast-qual warnings.
We do not meaningfully track object const-ness of Objective-C object
types. Silence the -Wcast-qual warning that is issued when casting to or
from Objective-C object types results in losing const qualification.
rdar://problem/33807915
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/branches/release_50@311095 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/SemaObjC/illegal-nonarc-bridged-cast.m | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/test/SemaObjC/illegal-nonarc-bridged-cast.m b/test/SemaObjC/illegal-nonarc-bridged-cast.m index f3406ef983..23c7b96e37 100644 --- a/test/SemaObjC/illegal-nonarc-bridged-cast.m +++ b/test/SemaObjC/illegal-nonarc-bridged-cast.m @@ -1,8 +1,9 @@ -// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fblocks -verify %s +// RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fsyntax-only -fblocks -Wcast-qual -verify %s // rdar://10597832 typedef const void *CFTypeRef; typedef const struct __CFString *CFStringRef; +@class NSString; @interface NSString @end @@ -18,7 +19,7 @@ NSString *CreateNSString(); void from_cf() { id obj1 = (__bridge_transfer id)CFCreateSomething(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}} id obj2 = (__bridge_transfer NSString*)CFCreateString(); // expected-warning {{'__bridge_transfer' casts have no effect when not using ARC}} - (__bridge int*)CFCreateSomething(); // expected-warning {{expression result unused}} + (__bridge int*)CFCreateSomething(); // expected-warning {{expression result unused}} expected-warning {{cast from 'const void *' to 'int *' drops const qualifier}} id obj3 = (__bridge id)CFGetSomething(); id obj4 = (__bridge NSString*)CFGetString(); } @@ -41,3 +42,15 @@ void to_cf_ignored(id obj) { CFTypeRef cf1 = (__bridge_retained CFTypeRef)CreateSomething(); // no-warning CFTypeRef cf3 = (__bridge CFTypeRef)CreateSomething(); // no-warning } + +// Check that clang doesn't warn about dropping const from Objective-C object +// types. +void test_wcast_qual() { + CFStringRef c; + NSString *n0 = (NSString *)c; + NSString **n1 = (NSString **)&c; + const NSString *n2; + const NSString **n3; + void *p0 = (void *)n2; + void **p1 = (void **)n3; +} |