From e1e018a8dc8c96f45486768356b7fb370ae0527c Mon Sep 17 00:00:00 2001 From: Julien Malik Date: Mon, 2 May 2016 12:13:24 +0200 Subject: [PATCH] Fix UBSan gcc warning for first arg to memset non null --- src/lib/openjp2/t1.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/lib/openjp2/t1.c b/src/lib/openjp2/t1.c index 1e9480bd..1bf7205e 100644 --- a/src/lib/openjp2/t1.c +++ b/src/lib/openjp2/t1.c @@ -1180,7 +1180,10 @@ static OPJ_BOOL opj_t1_allocate_buffers( } t1->datasize=datasize; } - memset(t1->data,0,datasize * sizeof(OPJ_INT32)); + /* memset first arg is declared to never be null by gcc */ + if (t1->data != NULL) { + memset(t1->data,0,datasize * sizeof(OPJ_INT32)); + } } t1->flags_stride=w+2; flagssize=t1->flags_stride * (h+2);