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hanchenye-llvm-project/clang/test/SemaObjC/attr-objc-gc.m

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objc_gc wants a pointer type, not a function type; give it a more appropriate diagnostic. Also, these attributes are commonly written with macros which we actually pre-define, so instead of expanding the macro location, refer to the instantiation location and name it using the macro loc. llvm-svn: 127219
2011-03-08 12:17:03 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
Fix silly bug in objc_gc attribute parsing and add test case llvm-svn: 55286
2008-08-25 00:33:25 +08:00
static id __attribute((objc_gc(weak))) a;
static id __attribute((objc_gc(strong))) b;
err_attribute_not_string has been subsumed by err_attribute_argument_type. llvm-svn: 187400
2013-07-30 09:31:03 +08:00
static id __attribute((objc_gc())) c; // expected-error{{'objc_gc' attribute requires a string}}
static id __attribute((objc_gc(123))) d; // expected-error{{'objc_gc' attribute requires a string}}
Added the attribute name to the err_attribute_wrong_number_arguments diagnostic for clarity; updated almost all of the affected test cases. Thanks to Fariborz Jahanian for the suggestion! llvm-svn: 186980
2013-07-24 03:30:11 +08:00
static id __attribute((objc_gc(foo, 456))) e; // expected-error{{'objc_gc' attribute takes one argument}}
Fix silly bug in objc_gc attribute parsing and add test case llvm-svn: 55286
2008-08-25 00:33:25 +08:00
static id __attribute((objc_gc(hello))) f; // expected-warning{{'objc_gc' attribute argument not supported: 'hello'}}
objc_gc wants a pointer type, not a function type; give it a more appropriate diagnostic. Also, these attributes are commonly written with macros which we actually pre-define, so instead of expanding the macro location, refer to the instantiation location and name it using the macro loc. llvm-svn: 127219
2011-03-08 12:17:03 +08:00
static int __attribute__((objc_gc(weak))) g; // expected-warning {{'objc_gc' only applies to pointer types; type here is 'int'}}
Define weak and __weak to mean ARC-style weak references, even in MRC. Previously, __weak was silently accepted and ignored in MRC mode. That makes this a potentially source-breaking change that we have to roll out cautiously. Accordingly, for the time being, actual support for __weak references in MRC is experimental, and the compiler will reject attempts to actually form such references. The intent is to eventually enable the feature by default in all non-GC modes. (It is, of course, incompatible with ObjC GC's interpretation of __weak.) If you like, you can enable this feature with -Xclang -fobjc-weak but like any -Xclang option, this option may be removed at any point, e.g. if/when it is eventually enabled by default. This patch also enables the use of the ARC __unsafe_unretained qualifier in MRC. Unlike __weak, this is being enabled immediately. Since variables are essentially __unsafe_unretained by default in MRC, the only practical uses are (1) communication and (2) changing the default behavior of by-value block capture. As an implementation matter, this means that the ObjC ownership qualifiers may appear in any ObjC language mode, and so this patch removes a number of checks for getLangOpts().ObjCAutoRefCount that were guarding the processing of these qualifiers. I don't expect this to be a significant drain on performance; it may even be faster to just check for these qualifiers directly on a type (since it's probably in a register anyway) than to do N dependent loads to grab the LangOptions. rdar://9674298 llvm-svn: 251041
2015-10-23 02:38:17 +08:00
static __weak int h; // expected-warning {{'__weak' only applies to Objective-C object or block pointer types; type here is 'int'}}
Fix my earlier commit to work with escaped newlines and leave breadcrumbs in case we want to make a world where we can check intermediate instantiations for this kind of breadcrumb. llvm-svn: 127221
2011-03-08 15:59:04 +08:00
// TODO: it would be great if this reported as __weak
#define WEAK __weak
Define weak and __weak to mean ARC-style weak references, even in MRC. Previously, __weak was silently accepted and ignored in MRC mode. That makes this a potentially source-breaking change that we have to roll out cautiously. Accordingly, for the time being, actual support for __weak references in MRC is experimental, and the compiler will reject attempts to actually form such references. The intent is to eventually enable the feature by default in all non-GC modes. (It is, of course, incompatible with ObjC GC's interpretation of __weak.) If you like, you can enable this feature with -Xclang -fobjc-weak but like any -Xclang option, this option may be removed at any point, e.g. if/when it is eventually enabled by default. This patch also enables the use of the ARC __unsafe_unretained qualifier in MRC. Unlike __weak, this is being enabled immediately. Since variables are essentially __unsafe_unretained by default in MRC, the only practical uses are (1) communication and (2) changing the default behavior of by-value block capture. As an implementation matter, this means that the ObjC ownership qualifiers may appear in any ObjC language mode, and so this patch removes a number of checks for getLangOpts().ObjCAutoRefCount that were guarding the processing of these qualifiers. I don't expect this to be a significant drain on performance; it may even be faster to just check for these qualifiers directly on a type (since it's probably in a register anyway) than to do N dependent loads to grab the LangOptions. rdar://9674298 llvm-svn: 251041
2015-10-23 02:38:17 +08:00
static WEAK int h; // expected-warning {{'objc_ownership' only applies to Objective-C object or block pointer types; type here is 'int'}}
Fix my earlier commit to work with escaped newlines and leave breadcrumbs in case we want to make a world where we can check intermediate instantiations for this kind of breadcrumb. llvm-svn: 127221
2011-03-08 15:59:04 +08:00
Define weak and __weak to mean ARC-style weak references, even in MRC. Previously, __weak was silently accepted and ignored in MRC mode. That makes this a potentially source-breaking change that we have to roll out cautiously. Accordingly, for the time being, actual support for __weak references in MRC is experimental, and the compiler will reject attempts to actually form such references. The intent is to eventually enable the feature by default in all non-GC modes. (It is, of course, incompatible with ObjC GC's interpretation of __weak.) If you like, you can enable this feature with -Xclang -fobjc-weak but like any -Xclang option, this option may be removed at any point, e.g. if/when it is eventually enabled by default. This patch also enables the use of the ARC __unsafe_unretained qualifier in MRC. Unlike __weak, this is being enabled immediately. Since variables are essentially __unsafe_unretained by default in MRC, the only practical uses are (1) communication and (2) changing the default behavior of by-value block capture. As an implementation matter, this means that the ObjC ownership qualifiers may appear in any ObjC language mode, and so this patch removes a number of checks for getLangOpts().ObjCAutoRefCount that were guarding the processing of these qualifiers. I don't expect this to be a significant drain on performance; it may even be faster to just check for these qualifiers directly on a type (since it's probably in a register anyway) than to do N dependent loads to grab the LangOptions. rdar://9674298 llvm-svn: 251041
2015-10-23 02:38:17 +08:00
/* expected-warning {{'__weak' only applies to Objective-C object or block pointer types; type here is 'int'}}*/ static __we\
Fix my earlier commit to work with escaped newlines and leave breadcrumbs in case we want to make a world where we can check intermediate instantiations for this kind of breadcrumb. llvm-svn: 127221
2011-03-08 15:59:04 +08:00
ak int i;
Allow GC qualifiers to be added/removed by conversions from/to void* without a warning. llvm-svn: 128328
2011-03-26 10:56:45 +08:00
// rdar://problem/9126213
void test2(id __attribute((objc_gc(strong))) *strong,
id __attribute((objc_gc(weak))) *weak) {
void *opaque;
opaque = strong;
strong = opaque;
opaque = weak;
weak = opaque;
}