diff options
| author | Anders Carlsson <andersca@mac.com> | 2010-10-22 23:37:08 +0000 |
|---|---|---|
| committer | Anders Carlsson <andersca@mac.com> | 2010-10-22 23:37:08 +0000 |
| commit | 73067a02db9aa1e29d6df0bece45f8b5f390ed57 (patch) | |
| tree | aa47d17dddf91395218071a23fa460f2cded73a2 /clang/lib/Sema/SemaAttr.cpp | |
| parent | 9ef5c507cea5b8abf0b202d20d67245856c94acc (diff) | |
| download | bcm5719-llvm-73067a02db9aa1e29d6df0bece45f8b5f390ed57.tar.gz bcm5719-llvm-73067a02db9aa1e29d6df0bece45f8b5f390ed57.zip | |
Warn if a variable marked with the "unused" attribute is used. Patch by Darin Adler!
llvm-svn: 117184
Diffstat (limited to 'clang/lib/Sema/SemaAttr.cpp')
| -rw-r--r-- | clang/lib/Sema/SemaAttr.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/Sema/SemaAttr.cpp b/clang/lib/Sema/SemaAttr.cpp index 0921156b932..d7290c3089a 100644 --- a/clang/lib/Sema/SemaAttr.cpp +++ b/clang/lib/Sema/SemaAttr.cpp @@ -288,6 +288,10 @@ void Sema::ActOnPragmaUnused(const Token *Identifiers, unsigned NumIdentifiers, continue; } + // Warn if this was used before being marked unused. + if (VD->isUsed()) + Diag(PragmaLoc, diag::warn_used_but_marked_unused) << Name; + VD->addAttr(::new (Context) UnusedAttr(Tok.getLocation(), Context)); } } |
