Hi, > I'm trying to read the first 4 bytes from a profile (to get the tag > type), and I'm doing something like this:
Fixed in GIT. As usual, thanks for reporting! Regards Marti Quoting Richard Hughes <hughsi...@gmail.com>: > Hi all, > > I'm trying to read the first 4 bytes from a profile (to get the tag > type), and I'm doing something like this: > > cmsTagSignature sig; > char buffer[4]; > sig = cmsGetTagSignature(hProfile, i); > tag_size = cmsReadRawTag(hProfile, sig, buffer, 4); > > This returns the correct tag_size, but running this under valgrind > seems to suggest that rather than writing 4 bytes into buffer (which > is what I asked for), tag_size bytes seem to be written. This makes > buffer overflow, and depending on how forgiving the compiler has been > and the size of the raw tag, the program crashes in random places. > Throw -fPIE into the mix and it crashes every time. > > I'm not completely sure how to fix this, as MemIO->Tell is used to > return the size of the tag, which isn't going to be correct if the > buffer size is too small to fit the entire tag in. > > I couldn't see a better way to extract the cmsTagTypeSignature when > iterating cmsGetTagCount, maybe an accessor is also a good idea. > > Ideas very welcome, thanks. > > Richard. > > ------------------------------------------------------------------------------ > Learn Graph Databases - Download FREE O'Reilly Book > "Graph Databases" is the definitive new guide to graph databases and > their applications. This 200-page book is written by three acclaimed > leaders in the field. The early access version is available now. > Download your free book today! http://p.sf.net/sfu/neotech_d2d_may > _______________________________________________ > Lcms-user mailing list > Lcms-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lcms-user > ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
