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| author | Matt Beaumont-Gay <matthewbg@google.com> | 2012-10-23 23:19:32 +0000 |
|---|---|---|
| committer | Matt Beaumont-Gay <matthewbg@google.com> | 2012-10-23 23:19:32 +0000 |
| commit | c7db84d0146a6f22b19949fb0128e2148aa92467 (patch) | |
| tree | 9d33b6e3660b2720a4d246b01bc9c77ac56443a7 /lib/AST/Expr.cpp | |
| parent | f27762b1beced898e47aeae1bcb557addd8a148d (diff) | |
Don't emit -Wunused-value warnings from macro expansions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166522 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AST/Expr.cpp')
| -rw-r--r-- | lib/AST/Expr.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/AST/Expr.cpp b/lib/AST/Expr.cpp index 3c8cbb56a0..68bce4b6f6 100644 --- a/lib/AST/Expr.cpp +++ b/lib/AST/Expr.cpp @@ -2026,6 +2026,10 @@ bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc, } case CXXFunctionalCastExprClass: case CStyleCastExprClass: { + // Ignore casts within macro expansions. + if (getExprLoc().isMacroID()) + return false; + // Ignore an explicit cast to void unless the operand is a non-trivial // volatile lvalue. const CastExpr *CE = cast<CastExpr>(this); |