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Make IgnoreParenLValueCasts skip __extension__ nodes like IgnoreParens(). 

Abramo noticed this.

llvm-svn: 120898
This commit is contained in:
John McCall 2010-12-04 08:24:19 +00:00
parent b024166c97
commit 5a4ce8bf06
1 changed files with 11 additions and 3 deletions
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14
clang/lib/AST/Expr.cpp
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@ -1724,18 +1724,26 @@ Expr *Expr::IgnoreParenCasts() {
}
}
/// IgnoreParenLValueCasts - Ignore parentheses and lvalue-to-rvalue
/// casts. This is intended purely as a temporary workaround for code
/// that hasn't yet been rewritten to do the right thing about those
/// casts, and may disappear along with the last internal use.
Expr *Expr::IgnoreParenLValueCasts() {
Expr *E = this;
while (E) {
while (true) {
if (ParenExpr *P = dyn_cast<ParenExpr>(E)) {
E = P->getSubExpr();
continue;
}
if (CastExpr *P = dyn_cast<CastExpr>(E)) {
} else if (CastExpr *P = dyn_cast<CastExpr>(E)) {
if (P->getCastKind() == CK_LValueToRValue) {
E = P->getSubExpr();
continue;
}
} else if (UnaryOperator* P = dyn_cast<UnaryOperator>(E)) {
if (P->getOpcode() == UO_Extension) {
E = P->getSubExpr();
continue;
}
}
break;
}