ImBuf: replace exit(1) with assert when writing IRIS images

In this case memory past the buffer bounds would have been written,
potentially crashing. Replace the check with an assert since this
should never happen.

Also don't call exit as failing to write a file shouldn't exit Blender.

1 files changed, 3 insertions, 4 deletions

diff --git a/source/blender/imbuf/intern/iris.c b/source/blender/imbuf/intern/iris.c
index c3d940d85be..a8150fd1648 100644
--- a/source/blender/imbuf/intern/iris.c
+++ b/source/blender/imbuf/intern/iris.c
@@ -854,10 +854,9 @@ static bool output_iris(const char *filepath,
           len = compressrow((const uchar *)zptr, rlebuf, CHANOFFSET(z - 4), xsize);
         }
       }
-      if (len > rlebuflen) {
-        fprintf(stderr, "output_iris: rlebuf is too small - bad poop\n");
-        exit(1);
-      }
+
+      BLI_assert_msg(len <= rlebuflen, "The length calculated for 'rlebuflen' was too small!");
+
       goodwrite *= fwrite(rlebuf, len, 1, outf);
       starttab[y + z * ysize] = pos;
       lengthtab[y + z * ysize] = len;