scc

commit 46f4fcce1a9d9715786442d3dad0ee87d868923f
parent 17417c34fe371e2ce8ea7a5acad5d39ff77dca0f
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Sun, 12 Feb 2017 16:51:31 +0100

[cc2-qbe] Fix writeout() without a function

Writeout() uses the curfun pointer without checking
if we have a function. This generates a segmentation
fault in this input:

	struct S { unsigned int a; };

Diffstat:
M
cc2/arch/qbe/code.c
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/cc2/arch/qbe/code.c b/cc2/arch/qbe/code.c
@@ -340,6 +340,8 @@ writeout(void)
 	char *sep, *name;
 	int haslabel = 0;
 
+	if (!curfun)
+		return;
 	if (curfun->kind == SGLOB)
 		fputs("export ", stdout);
 	printf("function %s %s(", size2stack(&curfun->rtype), symname(curfun));