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llvm-project/clang/test/CodeGen/attr-weak-import.c

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llvm-gcc treats a tentative definition with a previous (or follow up) extern declaration with weak_import as an actual definition. make clang follows this behavior. // rdar://9538608 llvm-gcc treats an extern declaration with weak_import llvm-svn: 133450
2011-06-21 01:50:03 +08:00
// RUN: %clang_cc1 -triple x86_64-darwin-apple -emit-llvm -o - %s | FileCheck %s
// rdar://9538608
extern int A __attribute__((weak_import));
int A;
extern int B __attribute__((weak_import));
extern int B;
int C;
extern int C __attribute__((weak_import));
extern int D __attribute__((weak_import));
extern int D __attribute__((weak_import));
int D;
extern int E __attribute__((weak_import));
int E;
extern int E __attribute__((weak_import));
Revert "[CodeGenModule] Set dso_local for Mach-O GlobalValue" This reverts commit 809a1e0ffd7af40ee27270ff8ba2ffc927330e71. Mach-O doesn't support dso_local and this change broke XNU because of the use of dso_local. Differential Revision: https://reviews.llvm.org/D98458
2021-03-12 06:54:47 +08:00
// CHECK: @A = global i32
llvm-gcc treats a tentative definition with a previous (or follow up) extern declaration with weak_import as an actual definition. make clang follows this behavior. // rdar://9538608 llvm-gcc treats an extern declaration with weak_import llvm-svn: 133450
2011-06-21 01:50:03 +08:00
// CHECK-NOT: @B =
Revert "[CodeGenModule] Set dso_local for Mach-O GlobalValue" This reverts commit 809a1e0ffd7af40ee27270ff8ba2ffc927330e71. Mach-O doesn't support dso_local and this change broke XNU because of the use of dso_local. Differential Revision: https://reviews.llvm.org/D98458
2021-03-12 06:54:47 +08:00
// CHECK: @C = global i32
// CHECK: @D = global i32
// CHECK: @E = global i32
llvm-gcc treats a tentative definition with a previous (or follow up) extern declaration with weak_import as an actual definition. make clang follows this behavior. // rdar://9538608 llvm-gcc treats an extern declaration with weak_import llvm-svn: 133450
2011-06-21 01:50:03 +08:00