diff options
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. |