neels has uploaded this change for review.

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coverity CID#27224

prevent st->buf == NULL dereference.

Change-Id: I6760be87dfa5281d79f6ebfb749b09179192ba3c
---
M src/OCTET_STRING.c
1 file changed, 3 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/libasn1c refs/changes/85/37985/1

diff --git a/src/OCTET_STRING.c b/src/OCTET_STRING.c
index 9d2e817..959c32e 100644
--- a/src/OCTET_STRING.c
+++ b/src/OCTET_STRING.c
@@ -1798,10 +1798,11 @@
 			ret = OCTET_STRING_per_put_characters(po, st->buf,
 				sizeinunits, bpc, unit_bits,
 				cval->lower_bound, cval->upper_bound, pc);
-		} else {
+		} else if (st->buf) {
 			ret = per_put_many_bits(po, st->buf,
 				sizeinunits * unit_bits);
-		}
+		} else
+			_ASN_ENCODE_FAILED;
 		if(ret) _ASN_ENCODE_FAILED;
 		_ASN_ENCODED_OK(er);
 	}

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