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| author | Chris Lattner <sabre@nondot.org> | 2009-10-30 04:01:58 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-10-30 04:01:58 +0000 |
| commit | 9e6b37a9f1d499e7ca0950edacd0b6569e491d7f (patch) | |
| tree | d6a612a64b3babfad7ea18d4544379543b775dd9 /lib/Sema/SemaChecking.cpp | |
| parent | d3379292f90e1381d3236c68891bb725b02464b6 (diff) | |
warn about returning the address of a label.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85576 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Sema/SemaChecking.cpp')
| -rw-r--r-- | lib/Sema/SemaChecking.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Sema/SemaChecking.cpp b/lib/Sema/SemaChecking.cpp index b7ccedec70..38b6ebeefa 100644 --- a/lib/Sema/SemaChecking.cpp +++ b/lib/Sema/SemaChecking.cpp @@ -1272,10 +1272,15 @@ Sema::CheckReturnStackAddr(Expr *RetValExp, QualType lhsType, // Skip over implicit cast expressions when checking for block expressions. RetValExp = RetValExp->IgnoreParenCasts(); - if (BlockExpr *C = dyn_cast_or_null<BlockExpr>(RetValExp)) + if (BlockExpr *C = dyn_cast<BlockExpr>(RetValExp)) if (C->hasBlockDeclRefExprs()) Diag(C->getLocStart(), diag::err_ret_local_block) << C->getSourceRange(); + + if (AddrLabelExpr *ALE = dyn_cast<AddrLabelExpr>(RetValExp)) + Diag(ALE->getLocStart(), diag::warn_ret_addr_label) + << ALE->getSourceRange(); + } else if (lhsType->isReferenceType()) { // Perform checking for stack values returned by reference. // Check for a reference to the stack |