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Restructure code to encourage fallthrough, no functionality change. 

llvm-svn: 59157
This commit is contained in:
Chris Lattner 2008-11-12 19:48:13 +00:00
parent e7d1cdb6fd
commit b5da7a342c
1 changed files with 13 additions and 10 deletions
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23
clang/lib/Sema/SemaDecl.cpp
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@ -2482,16 +2482,19 @@ QualType Sema::TryFixInvalidVariablyModifiedType(QualType T) {
// array even when the size isn't an ICE. This is necessary
// for compatibility with code that depends on gcc's buggy
// constant expression folding, like struct {char x[(int)(char*)2];}
if (const VariableArrayType* VLATy = dyn_cast<VariableArrayType>(T)) {
APValue Result;
if (VLATy->getSizeExpr() &&
VLATy->getSizeExpr()->tryEvaluate(Result, Context) && Result.isInt()) {
llvm::APSInt &Res = Result.getInt();
if (Res > llvm::APSInt(Res.getBitWidth(), Res.isUnsigned()))
return Context.getConstantArrayType(VLATy->getElementType(),
Res, ArrayType::Normal, 0);
}
}
const VariableArrayType* VLATy = dyn_cast<VariableArrayType>(T);
if (!VLATy) return QualType();
APValue Result;
if (!VLATy->getSizeExpr() ||
!VLATy->getSizeExpr()->tryEvaluate(Result, Context))
return QualType();
assert(Result.isInt() && "Size expressions must be integers!");
llvm::APSInt &Res = Result.getInt();
if (Res > llvm::APSInt(Res.getBitWidth(), Res.isUnsigned()))
return Context.getConstantArrayType(VLATy->getElementType(),
Res, ArrayType::Normal, 0);
return QualType();
}