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-rw-r--r--bufaux.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/bufaux.c b/bufaux.c
index 23bc0c81..64b9a26e 100644
--- a/bufaux.c
+++ b/bufaux.c
@@ -221,6 +221,8 @@ buffer_put_string(Buffer *buffer, const void *buf, u_int len)
void
buffer_put_cstring(Buffer *buffer, const char *s)
{
+ if (s == NULL)
+ fatal("buffer_put_cstring: s == NULL");
buffer_put_string(buffer, s, strlen(s));
}