libcdecl: Sidestep some possible snprintf issues.

[cdecl99.git] / src / output.c

diff --git a/src/output.c b/src/output.c
index 62c9c8f9bd0839330de432fde4ea79dac5d9f947..1075221b7e0aabebcd6b779638d3fa3b46d03a54 100644 (file)
--- a/src/output.c
+++ b/src/output.c
@@ -38,9 +38,16 @@ size_t cdecl__advance(struct output_state *dst, size_t amount)
        return amount;
 }
 
+static size_t cdecl__strlcpy(char *dst, const char *src, size_t dstlen)
+{
+       if (dst)
+               snprintf(dst, dstlen, "%s", src);
+       return strlen(src);
+}
+
 size_t cdecl__emit(struct output_state *dst, const char *src)
 {
-       size_t rc = snprintf(dst->dst, dst->dstlen, "%s", src);
+       size_t rc = cdecl__strlcpy(dst->dst, src, dst->dstlen);
        return cdecl__advance(dst, rc);
 }