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5d0199a218
The object is provided by the objc runtime and is never visible in the module itself, but even so, the address point we compute points into it, and "+16" is guaranteed not to overflow. This matches the c++ vtable IRGen. Note that I'm not entirely convinced the 'i8*' type is correct here: at the IR level, we're accessing memory that's outside the global object. But we don't control the allocation, so it's not obviously wrong either. But either way, this is only in a global initializer, so I don't think it's going to be mucked with. Filed PR35352 to discuss that. llvm-svn: 318545
28 lines
1.0 KiB
Objective-C
28 lines
1.0 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fexceptions -fobjc-exceptions -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fexceptions -fobjc-exceptions -fvisibility hidden -o - %s | FileCheck -check-prefix=CHECK-HIDDEN %s
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__attribute__((objc_root_class))
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@interface Root {
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Class isa;
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}
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@end
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__attribute__((objc_exception))
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@interface A : Root
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@end
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@implementation A
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@end
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// CHECK: @"OBJC_EHTYPE_$_A" = global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
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// CHECK-HIDDEN: @"OBJC_EHTYPE_$_A" = hidden global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
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__attribute__((objc_exception))
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__attribute__((visibility("default")))
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@interface B : Root
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@end
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@implementation B
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@end
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// CHECK: @"OBJC_EHTYPE_$_B" = global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
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// CHECK-HIDDEN: @"OBJC_EHTYPE_$_B" = global {{%.*}} { i8** getelementptr inbounds (i8*, i8** @objc_ehtype_vtable, i32 2)
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