Use hardening option to add only hardening flags

[tinc] / src / gcrypt / pem.c

diff --git a/src/gcrypt/pem.c b/src/gcrypt/pem.c
index b2eca3d..56858f2 100644 (file)
--- a/src/gcrypt/pem.c
+++ b/src/gcrypt/pem.c
@@ -93,11 +93,11 @@ bool pem_encode(FILE *fp, const char *header, uint8_t *buf, size_t size) {
                return false;
        }
 
-       char b64[B64_SIZE(size)];
+       char *b64 = alloca(B64_SIZE(size));
        const size_t b64len = b64encode(b64, buf, size);
 
-       for(char *p = b64; p < b64 + b64len; p += 64) {
-               if(fprintf(fp, "%.64s\n", p) <= 0) {
+       for(size_t i = 0; i < b64len; i += 64) {
+               if(fprintf(fp, "%.64s\n", &b64[i]) <= 0) {
                        return false;
                }
        }