Package: libfs Version: 2:1.0.5-1 Usertags: goto-cc During a rebuild of all Debian packages in a clean sid chroot (using cowbuilder and pbuilder) the build failed with the following error. Please note that we use our research compiler tool-chain (using tools from the cbmc package), which permits extended reporting on type inconsistencies at link time.
[...] libtool: link: gcc -shared -fPIC -DPIC .libs/FSCloseFt.o .libs/FSClServ.o .libs/FSConnServ.o .libs/FSErrDis.o .libs/FSErrHndlr.o .libs/FSFlush.o .libs/FSFontInfo.o .libs/FSFtNames.o .libs/FSGetCats.o .libs/FSlibInt.o .libs/FSListCats.o .libs/FSListExt.o .libs/FSMisc.o .libs/FSNextEv.o .libs/FSOpenFont.o .libs/FSOpenServ.o .libs/FSQGlyphs.o .libs/FSQuExt.o .libs/FSQXExt.o .libs/FSQXInfo.o .libs/FSServName.o .libs/FSSetCats.o .libs/FSSync.o .libs/FSSynchro.o .libs/fs_transport.o -O2 -Wl,-z -Wl,relro -Wl,-soname -Wl,libFS.so.6 -Wl,-version-script -Wl,.libs/libFS.ver -o .libs/libFS.so.6.0.0 error: conflicting function declarations "_FSTransBytesReadable" old definition in module FSConnServ file /usr/include/X11/Xtrans/Xtrans.h line 338 signed int (struct _XtransConnInfo *, signed int *) new definition in module fs_transport file /usr/include/X11/Xtrans/Xtrans.c line 897 signed int (struct _XtransConnInfo *ciptr, signed long int *pend) Makefile:467: recipe for target 'libFS.la' failed make[3]: *** [libFS.la] Error 64 make[3]: Leaving directory '/srv/jenkins-slave/workspace/sid-goto-cc-libfs/libfs-1.0.5/build/src' Makefile:509: recipe for target 'all-recursive' failed While Xtrans.h and Xtrans.c can reasonably be expected to be consistent, indeed the second parameter's type depends on whether LONG64 is defined or not. This is set in /usr/include/X11/Xmd.h, which is transitively included by FSConnServ.c (via #include "FSlibint.h"). fs_transport.c, however, solely has: #include "config.h" /* Need to know which transport types to support */ #include <X11/Xtrans/transport.c> This causes a mismatch of types, with undefined behaviour as dereferencing the "pend" pointer will cause invalid memory accesses. Consequently fs_transport.c should include FSlibint.h before transport.c. Best, Michael
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