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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2014-09-24 23:55:00 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2014-09-24 23:55:00 +0000 |
| commit | 5b571672852c1b54ef0bd4d102b70cbf9331770e (patch) | |
| tree | c2c83a1b4b1e7f00fc7580f9dddebbfa1f5dc6d7 /clang/lib/AST/Expr.cpp | |
| parent | fd5e21adbadd17cbd1033d0be7c39a0de18c0bec (diff) | |
| download | bcm5719-llvm-5b571672852c1b54ef0bd4d102b70cbf9331770e.tar.gz bcm5719-llvm-5b571672852c1b54ef0bd4d102b70cbf9331770e.zip | |
Fix handling of preincrement on bit-fields. This gives a bit-field in C++, but
we were failing to find that bit-field when performing integer promotions. This
brings us closer to following the standard, and closer to GCC.
In C, this change is technically a regression: we get bit-field promotions
completely wrong in C, promoting cases that are categorically not bit-field
designators. This change makes us do so slightly more consistently, though.
llvm-svn: 218428
Diffstat (limited to 'clang/lib/AST/Expr.cpp')
| -rw-r--r-- | clang/lib/AST/Expr.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp index 523db1243d7..0970d59c9c5 100644 --- a/clang/lib/AST/Expr.cpp +++ b/clang/lib/AST/Expr.cpp @@ -3278,6 +3278,10 @@ FieldDecl *Expr::getSourceBitField() { return BinOp->getRHS()->getSourceBitField(); } + if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E)) + if (UnOp->isPrefix() && UnOp->isIncrementDecrementOp()) + return UnOp->getSubExpr()->getSourceBitField(); + return nullptr; } |
