From: Thomas Pornin <pornin@bolet.org>
Date: Tue, 5 Jun 2018 13:18:27 +0000 (+0200)
Subject: Added guard code to avoid issue when decoding PEM but not keeping data.
X-Git-Tag: v0.6~9
X-Git-Url: https://bearssl.org/gitweb//home/git/?a=commitdiff_plain;h=d69276c18d55480e1bfa4b4c28b31062a706f6f0;p=BearSSL

Added guard code to avoid issue when decoding PEM but not keeping data.
---

diff --git a/src/codec/pemdec.c b/src/codec/pemdec.c
index db8f0e6..b599f84 100644
--- a/src/codec/pemdec.c
+++ b/src/codec/pemdec.c
@@ -441,7 +441,9 @@ br_pem_decoder_run(void *t0ctx)
 				/* flush-buf */
 
 	if (CTX->ptr > 0) {
-		CTX->dest(CTX->dest_ctx, CTX->buf, CTX->ptr);
+		if (CTX->dest) {
+			CTX->dest(CTX->dest_ctx, CTX->buf, CTX->ptr);
+		}
 		CTX->ptr = 0;
 	}
 
diff --git a/src/codec/pemdec.t0 b/src/codec/pemdec.t0
index d76be44..4ebf0dd 100644
--- a/src/codec/pemdec.t0
+++ b/src/codec/pemdec.t0
@@ -204,7 +204,9 @@ cc: write8 ( x -- ) {
 \ Flush the output buffer.
 cc: flush-buf ( -- ) {
 	if (CTX->ptr > 0) {
-		CTX->dest(CTX->dest_ctx, CTX->buf, CTX->ptr);
+		if (CTX->dest) {
+			CTX->dest(CTX->dest_ctx, CTX->buf, CTX->ptr);
+		}
 		CTX->ptr = 0;
 	}
 }