scc

commit 693f45dbf91d15d6927af43f53b254a7d243e71e
parent 202a1a41c373981049dbb183f03a3179c3c04f5c
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Wed, 28 Feb 2018 12:30:30 +0000

[cc1] Don't allow redifinition of typedef

Redifinition of typedef is a new feature added in C11, and since
scc is a c99 compiler it must be an error.

Diffstat:
M
cc1/decl.c
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/cc1/decl.c b/cc1/decl.c
@@ -203,6 +203,8 @@ redcl(Symbol *sym, Type *tp, int sclass)
 		       name);
 		break;
 	case TYPEDEF:
+		/* Only C11 allows multiple definitions of a typedef. */
+		goto redeclaration;
 	case EXTERN:
 		break;
 	case STATIC: