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changeset 1797:5204fab92c9e

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If the c64 image format has a set size and our buffer after encoding in dmC64EncodeBMP() is smaller than that size, we grow the buffer to match (with zeroed data). This accounts for format variants that are otherwise identical.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 14 Jun 2018 04:00:59 +0300
parents 0801fd0e26cb
children 6db41588458c
files tools/lib64gfx.c
diffstat 1 files changed, 10 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/tools/lib64gfx.c	Thu Jun 14 03:59:45 2018 +0300
+++ b/tools/lib64gfx.c	Thu Jun 14 04:00:59 2018 +0300
@@ -1437,6 +1437,16 @@
     if (res != DMERR_OK)
         goto err;
 
+    // Finally, if the format has a set size and our buffer is smaller
+    // than that size, we grow the buffer to match (with zeroed data).
+    // This accounts for format variants that are otherwise identical.
+    if (fmt->size > 0 && buf->len < fmt->size &&
+        !dmGrowBufCheckGrow(buf, fmt->size))
+    {
+        res = DMERR_MALLOC;
+        goto err;
+    }
+
     return DMERR_OK;
 
 err: