scc

commit 4f5352fb2ecb3babe3122478bf0576f8905f1afc
parent 6ab70653836a3885179e12bb5ab14032bd1fb224
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Tue, 14 Feb 2017 22:39:11 +0100

[cc1] Fix segfault in mktype()

The patch 6ab66ac added a check about the last parameter
in the parameter list, but this check was incorrect when nelem == 0,
because we were accesing further or the borders of the array.

Diffstat:
M
cc1/types.c
 | 
2
+-

1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cc1/types.c b/cc1/types.c
@@ -301,7 +301,7 @@ mktype(Type *tp, int op, TINT nelem, Type *pars[])
 		type.letter = L_FUNCTION;
 		break;
 	case FTN:
-		if (pars[nelem-1] == ellipsistype)
+		if (nelem > 0 && pars[nelem-1] == ellipsistype)
 			type.prop |= TELLIPSIS;
 		type.letter = L_FUNCTION;
 		break;