[PATCH] D46846: [Attr] Fix loss of enum forward decl from decl context
Joel E. Denny via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Wed May 16 10:58:28 PDT 2018
jdenny updated this revision to Diff 147130.
jdenny retitled this revision from "[Attr] Fix printing attrs for enum forward decl at file scope" to "[Attr] Fix loss of enum forward decl from decl context".
jdenny edited the summary of this revision.
jdenny added a comment.
Made the suggested change. Thanks!
https://reviews.llvm.org/D46846
Files:
lib/Sema/SemaDecl.cpp
test/Sema/ast-print.c
test/SemaCXX/MicrosoftCompatibility.cpp
Index: test/SemaCXX/MicrosoftCompatibility.cpp
===================================================================
--- test/SemaCXX/MicrosoftCompatibility.cpp
+++ test/SemaCXX/MicrosoftCompatibility.cpp
@@ -239,6 +239,15 @@
ENUM2_c = 0x100000000 // expected-warning {{enumerator value is not representable in the underlying type 'int'}}
};
+namespace NsEnumForwardDecl {
+ enum E *p; // expected-warning {{forward references to 'enum' types are a Microsoft extension}}
+ extern E e;
+}
+// Clang used to complain that NsEnumForwardDecl::E was undeclared below.
+NsEnumForwardDecl::E NsEnumForwardDecl_e;
+namespace NsEnumForwardDecl {
+ extern E e;
+}
namespace PR11791 {
template<class _Ty>
Index: test/Sema/ast-print.c
===================================================================
--- test/Sema/ast-print.c
+++ test/Sema/ast-print.c
@@ -4,6 +4,8 @@
// RUN: echo >> %t.c "// expected""-warning@* {{use of GNU old-style field designator extension}}"
// RUN: echo >> %t.c "// expected""-warning@* {{'EnumWithAttributes' is deprecated}}"
// RUN: echo >> %t.c "// expected""-note@* {{'EnumWithAttributes' has been explicitly marked deprecated here}}"
+// RUN: echo >> %t.c "// expected""-warning@* {{'EnumWithAttributes2' is deprecated}}"
+// RUN: echo >> %t.c "// expected""-note@* {{'EnumWithAttributes2' has been explicitly marked deprecated here}}"
// RUN: echo >> %t.c "// expected""-warning@* {{'EnumWithAttributes3' is deprecated}}"
// RUN: echo >> %t.c "// expected""-note@* {{'EnumWithAttributes3' has been explicitly marked deprecated here}}"
// RUN: %clang_cc1 -fsyntax-only %t.c -verify
@@ -86,8 +88,7 @@
// CHECK-NEXT: } *EnumWithAttributesPtr;
} __attribute__((deprecated)) *EnumWithAttributesPtr; // expected-note {{'EnumWithAttributes' has been explicitly marked deprecated here}}
-// FIXME: If enum is forward-declared at file scope, attributes are lost.
-// CHECK-LABEL: enum EnumWithAttributes2 *EnumWithAttributes2Ptr;
+// CHECK-LABEL: enum __attribute__((deprecated(""))) EnumWithAttributes2 *EnumWithAttributes2Ptr;
// expected-warning at +2 {{'EnumWithAttributes2' is deprecated}}
// expected-note at +1 {{'EnumWithAttributes2' has been explicitly marked deprecated here}}
enum __attribute__((deprecated)) EnumWithAttributes2 *EnumWithAttributes2Ptr;
Index: lib/Sema/SemaDecl.cpp
===================================================================
--- lib/Sema/SemaDecl.cpp
+++ lib/Sema/SemaDecl.cpp
@@ -14343,7 +14343,6 @@
// PrevDecl.
TagDecl *New;
- bool IsForwardReference = false;
if (Kind == TTK_Enum) {
// FIXME: Tag decls should be chained to any simultaneous vardecls, e.g.:
// enum X { A, B, C } D; D should chain to X.
@@ -14373,12 +14372,6 @@
else if (getLangOpts().CPlusPlus)
DiagID = diag::err_forward_ref_enum;
Diag(Loc, DiagID);
-
- // If this is a forward-declared reference to an enumeration, make a
- // note of it; we won't actually be introducing the declaration into
- // the declaration context.
- if (TUK == TUK_Reference)
- IsForwardReference = true;
}
}
@@ -14536,9 +14529,7 @@
PushOnScopeChains(New, EnclosingScope, /* AddToContext = */ false);
} else if (Name) {
S = getNonFieldDeclScope(S);
- PushOnScopeChains(New, S, !IsForwardReference);
- if (IsForwardReference)
- SearchDC->makeDeclVisibleInContext(New);
+ PushOnScopeChains(New, S, true);
} else {
CurContext->addDecl(New);
}
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