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TheRock/compiler/amd-llvm/clang/test/Modules/decl-attr-merge.mm
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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// RUN: rm -rf %t.dir
// RUN: split-file %s %t.dir
// macOS: single-platform availability worked even before the fix.
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps \
// RUN: -fmodules-cache-path=%t.dir/mcache -triple x86_64-apple-macosx10.11.0 \
// RUN: -I%t.dir/headers %t.dir/main-macos.m -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-MACOS
// iOS: the @interface carries two AvailabilityAttrs (macOS + iOS).
// Without the fix, mergeInheritableAttributes used getAttr<AvailabilityAttr>()
// which only copied the first (macOS); the iOS attr was lost on the @class
// redeclaration, causing isWeakImported() to return false (strong linkage).
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps \
// RUN: -fmodules-cache-path=%t.dir/icache -triple arm64-apple-ios12.0 \
// RUN: -I%t.dir/headers %t.dir/main-ios.m -emit-llvm -o - | FileCheck %s --check-prefix=CHECK-IOS
//--- headers/a.h
__attribute__((availability(macos,introduced=10.16)))
__attribute__((availability(ios,introduced=14.0)))
@interface INIntent
- (instancetype)self;
@end
//--- headers/b.h
@class INIntent;
//--- headers/module.modulemap
module A {
header "a.h"
}
module B {
header "b.h"
}
//--- main-macos.m
#import <a.h>
#import <b.h> // NOTE: Non attributed decl imported after one with attrs.
void F(id);
int main() {
if (@available(macOS 11.0, *))
F([INIntent self]);
}
// CHECK-MACOS: @"OBJC_CLASS_$_INIntent" = extern_weak
//--- main-ios.m
#import <a.h>
#import <b.h>
@implementation INIntent (Testing)
@end
// CHECK-IOS: @"OBJC_CLASS_$_INIntent" = extern_weak