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Compute the promoted integer type of fixed-width enums correctly. Found by inspection. 

llvm-svn: 143021
This commit is contained in:
Eli Friedman 2011-10-26 07:38:19 +00:00
parent 8fae82a196
commit 64d9504b8f
2 changed files with 14 additions and 1 deletions
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6
clang/lib/Sema/SemaDecl.cpp
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@ -9702,7 +9702,11 @@ void Sema::ActOnEnumBody(SourceLocation EnumLoc, SourceLocation LBraceLoc,
Packed = true;
if (Enum->isFixed()) {
BestType = BestPromotionType = Enum->getIntegerType();
BestType = Enum->getIntegerType();
if (BestType->isPromotableIntegerType())
BestPromotionType = Context.getPromotedIntegerType(BestType);
else
BestPromotionType = BestType;
// We don't need to set BestWidth, because BestType is going to be the type
// of the enumerators, but we do anyway because otherwise some compilers
// warn that it might be used uninitialized.

9
clang/test/CXX/conv/conv.prom/p4.cpp Normal file
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@ -0,0 +1,9 @@
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++0x %s
enum X : short { A, B };
extern decltype(+A) x;
extern int x;
enum Y : long { C, D };
extern decltype(+C) y;
extern long y;