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| author | Eli Friedman <eli.friedman@gmail.com> | 2009-05-16 12:15:55 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2009-05-16 12:15:55 +0000 |
| commit | 88f7b576dde22ca95b4c73c4fd463e2e799873a7 (patch) | |
| tree | 646c0c8d68b345333e062137c0c99caf149b8f62 /lib/Sema/SemaDecl.cpp | |
| parent | 759f25237864f3a3cc23eb01f0c0ce6edcc9342d (diff) | |
PR2044: reject declarations of functions returning variably modified
types.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71941 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Sema/SemaDecl.cpp')
| -rw-r--r-- | lib/Sema/SemaDecl.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp index 1ed063ab40..077658c624 100644 --- a/lib/Sema/SemaDecl.cpp +++ b/lib/Sema/SemaDecl.cpp @@ -2344,6 +2344,13 @@ void Sema::CheckFunctionDeclaration(FunctionDecl *NewFD, NamedDecl *&PrevDecl, if (NewFD->isInvalidDecl()) return; + if (NewFD->getResultType()->isVariablyModifiedType()) { + // Functions returning a variably modified type violate C99 6.7.5.2p2 + // because all functions have linkage. + Diag(NewFD->getLocation(), diag::err_vm_func_decl); + return NewFD->setInvalidDecl(); + } + // Semantic checking for this function declaration (in isolation). if (getLangOptions().CPlusPlus) { // C++-specific checks. |