X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fbio_b64.c;h=6e550f6a430e5885aae9ff1051b593158422468e;hp=f12eac1b55a06b37a49d1d579f1b65d7edb9fca0;hb=54a656ef081f72a740c550ebd8099b40b8b5cde0;hpb=8f797f14b8ff7d3d5cb04443284259a0c94860b3

diff --git a/crypto/evp/bio_b64.c b/crypto/evp/bio_b64.c
index f12eac1b55..6e550f6a43 100644
--- a/crypto/evp/bio_b64.c
+++ b/crypto/evp/bio_b64.c
@@ -165,6 +165,7 @@ static int b64_read(BIO *b, char *out, int outl)
 		{
 		i=ctx->buf_len-ctx->buf_off;
 		if (i > outl) i=outl;
+		OPENSSL_assert(ctx->buf_off+i < sizeof ctx->buf);
 		memcpy(out,&(ctx->buf[ctx->buf_off]),i);
 		ret=i;
 		out+=i;