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Bug 3454

Summary: memory. double free or corrupted.
Product: SDL Reporter: Sakura <sakura.ix86>
Component: renderAssignee: Sam Lantinga <slouken>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: sylvain.becker
Version: 2.0.4   
Hardware: x86_64   
OS: Linux   
Attachments: source code of my jpeg decoder with sdl2

Description Sakura 2016-10-14 20:28:02 UTC 
Created attachment 2584 [details]
source code of my jpeg decoder with sdl2

If i include sdl into my jpeg decoder, some jpg's can not draw.

gcc *.c -lpthread -lm -I/usr/local/lib/ -lSDL2
./a.out 5in.jpg
Comment 1 Sylvain 2016-11-03 13:35:17 UTC 
I think this can be closed ...

valgrind reports an issue in your code, when decoding the 5in.jpg:


malloc(3584) 0xa181c90
malloc(3584) 0xa182ae0
malloc(3584) 0xa183930
==14966== Invalid write of size 1
==14966==    at 0x109AE3: funcYCbCrToRGB (jpegStream.c:249)
==14966==    by 0x10AEDF: jsycbcrtorgb (jpegStream.c:664)
==14966==    by 0x10B6A0: main (main.c:110)
==14966==  Address 0xa182a9a is 0 bytes after a block of size 3,594 alloc'd
==14966==    at 0x4C2CB3F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==14966==    by 0x108E5C: my_malloc (common.c:13)
==14966==    by 0x10AE0D: jsycbcrtorgb (jpegStream.c:655)
==14966==    by 0x10B6A0: main (main.c:110)
Comment 2 Sam Lantinga 2016-11-03 22:58:44 UTC 
Sylvain, thanks for investigating.

Sakura, please reopen this bug if your code runs cleanly under valgrind and you're still seeing this problem.