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[Sema] Tweak incomplete enum types on MSVC ABI targets 

Enums without an explicit, fixed, underlying type are implicitly given a
fixed 'int' type for ABI compatibility with MSVC.  However, we can
enforce the standard-mandated rules on these types as-if we didn't know
this fact if the tag is not part of a definition.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@249667 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer 2015-10-08 07:45:35 +00:00
parent 7006f5216c
commit 1d63a6b8d6
5 changed files with 8 additions and 6 deletions
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6
lib/Sema/SemaDecl.cpp
View File

@ -11769,8 +11769,10 @@ Decl *Sema::ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK,
EnumUnderlying = Context.IntTy.getTypePtr();
} else if (Context.getTargetInfo().getCXXABI().isMicrosoft()) {
// Microsoft enums are always of int type.
EnumUnderlying = Context.IntTy.getTypePtr();
if (getLangOpts().MSVCCompat || TUK == TUK_Definition) {
// Microsoft enums are always of int type.
EnumUnderlying = Context.IntTy.getTypePtr();
}
}
}

2
test/CodeGen/volatile-1.c
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -triple %itanium_abi_triple -Wno-return-type -Wno-unused-value -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -Wno-return-type -Wno-unused-value -emit-llvm %s -o - | FileCheck %s
// CHECK: @i = common global [[INT:i[0-9]+]] 0
volatile int i, j, k;

2
test/Parser/cxx0x-attributes.cpp
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -triple %itanium_abi_triple -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++11 -Wc++14-compat %s
// RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++11 -Wc++14-compat %s
// Need std::initializer_list
namespace std {

2
test/Sema/cast-incomplete.c
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -triple %itanium_abi_triple -fsyntax-only %s -verify
// RUN: %clang_cc1 -fsyntax-only %s -verify
// PR5692
enum x; // expected-note {{forward declaration}}

2
test/Sema/decl-in-prototype.c
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -triple %itanium_abi_triple -fsyntax-only -verify %s
// RUN: %clang_cc1 -triple %ms_abi_triple -fsyntax-only -verify %s
const int AA = 5;