Hello all.
I noticed the following problem with UFRaw: it's possible to set invalid (too
small)
crop dimensions and this results in division by zero in libjpeg while writing
the result file.
I guess UFRaw should check if the result image dimensions are valid and throw
an error if they are not.
How to reproduce:
# ufraw-batch <raw file --crop-top=10 --crop-bottom=10 --crop-left=10
--crop-right=10
Program received signal SIGFPE, Arithmetic exception.
0xb7c6b19c in alloc_sarray (cinfo=0xbffde6b4, pool_id=1, samplesperrow=0,
numrows=1) at ./jmemmgr.c:406
406 ./jmemmgr.c: No such file or directory.
in ./jmemmgr.c
(gdb) bt
#0 0xb7c6b19c in alloc_sarray (cinfo=0xbffde6b4, pool_id=1, samplesperrow=0,
numrows=1) at ./jmemmgr.c:406
#1 0xb7c5525f in jinit_c_prep_controller (cinfo=0xbffde6b4,
need_full_buffer=0) at ./jcprepct.c:347
#2 0xb7c53748 in jinit_compress_master (cinfo=0xbffde6b4) at ./jcinit.c:39
#3 0xb7c51e21 in jpeg_start_compress (cinfo=0xbffde6b4, write_all_tables=1) at
./jcapistd.c:50
#4 0x0806143a in ufraw_write_image (uf=0x8123ff8) at ufraw_writer.c:437
#5 0x0804dba2 in ufraw_batch_saver (uf=0x8123ff8) at ufraw-batch.c:159
#6 0x0804df18 in main (argc=7, argv=0xbffff104) at ufraw-batch.c:108
(gdb) f 4
#4 0x0806143a in ufraw_write_image (uf=0x8123ff8) at ufraw_writer.c:437
437 jpeg_start_compress(&cinfo, TRUE);
(gdb) p cinfo
$1 = {err = 0xbffde828, mem = 0x8123a18, progress = 0x0, client_data =
0x8123ff8, is_decompressor = 0, global_state =
100, dest = 0x815277c, image_width = 0, image_height = 0, .....
--
Wbr,
Antony Dovgal
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