Sanity fix for PR3642: if we're treating a diagnostic as an error, it's

required to actually be an error for correctness.  The attached testcase 
now gives an error instead of mysteriously crashing.

Now, it's possible we actually want to support the given usage, but I 
haven't looked at the relevant code closely.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65253 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 0 deletions

diff --git a/test/Sema/struct-decl.c b/test/Sema/struct-decl.c
index cdc9eaae3b..aa2d3b6342 100644
--- a/test/Sema/struct-decl.c
+++ b/test/Sema/struct-decl.c
@@ -22,3 +22,14 @@ int foo() {
         struct st *f;
         return f->v + f[0].v;
 }
+
+// PR3642
+struct pppoe_tag {
+ short tag_type;
+ char tag_data[];
+};
+struct datatag {
+ struct pppoe_tag hdr; //expected-error{{variable sized type 'hdr' must be at end of struct}}
+ char data;
+};
+