c: redeclaration ok when old was unspecified length array

1 files changed, 7 insertions, 0 deletions

diff --git a/c.c b/c.c
index 8109a9b..0f4c0f1 100644
--- a/c.c
+++ b/c.c
@@ -207,6 +207,13 @@ redeclarationok(const struct decl *old, const struct decl *new)
          break;
       /*fallthru*/
    case SCEXTERN:
+      if (old->ty.t == TYARRAY && new->ty.t == TYARRAY
+       && typechild(old->ty).bits == typechild(new->ty).bits
+       && isincomplete(old->ty))
+      {
+         return 1;
+      }
+      /*fallthru*/
    case SCTYPEDEF:
       return old->ty.bits == new->ty.bits;
    }