commit 07518f249f919b6bb7985018109cc45d99018fc8
author David Chisnall <csdavec@swan.ac.uk> Fri Mar 16 12:15:37 2012 +0000
committer David Chisnall <csdavec@swan.ac.uk> Fri Mar 16 12:15:37 2012 +0000
tree 6c58409c2c5575dacbf93dc3cccda00159bfc94a
parent 8a5070213ad10bb9840e3329533333c23188361d

Warn on flexible array members when in C89 mode, with -pedantic.
This fixes PR 4307.

Patch by Eitan Adler!

llvm-svn: 152918

clang/lib/Sema/SemaDecl.cpp

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index ab1a1b4..574c18c 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -9483,6 +9483,13 @@
         else if (Fields.size() == 1) 
           Diag(FD->getLocation(), diag::ext_flexible_array_empty_aggregate_gnu)
             << FD->getDeclName() << Record->getTagKind();
+      } else if (!getLangOpts().C99) {
+      if (Record->isUnion())
+        Diag(FD->getLocation(), diag::ext_flexible_array_union_gnu)
+          << FD->getDeclName();
+      else
+        Diag(FD->getLocation(), diag::ext_c99_flexible_array_member)
+          << FD->getDeclName() << Record->getTagKind();
       } else if (NumNamedMembers < 1) {
         Diag(FD->getLocation(), diag::err_flexible_array_empty_struct)
           << FD->getDeclName();