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-rw-r--r--rfc2047.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/rfc2047.c b/rfc2047.c
index f25762d..b581976 100644
--- a/rfc2047.c
+++ b/rfc2047.c
@@ -130,6 +130,10 @@ blaze822_decode_rfc2047(char *dst, char *src, size_t dlen, char *tgtenc)
iconv_t ic = (iconv_t)-1;
char *srcenc = 0;
+ // need space for trailing nul
+ if (dlen-- == 0)
+ return 0;
+
char *startdst = dst;
size_t startdlen = dlen;