huettel@porto ~/Work/Regensburg/Web/Homepage/publications $ pdf2htmlEX paddle.pdf paddle.html Speicherzugriffsfehler (Speicherabzug geschrieben) (=segmentation fault, core dumped) Backtrace: Program terminated with signal SIGSEGV, Segmentation fault. #0 fprintf (__fmt=0x7f369daa45da "%s:\t%s\n", __stream=0x55e05bed5d70) at /usr/include/bits/stdio2.h:97 97 return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, (gdb) bt #0 fprintf (__fmt=0x7f369daa45da "%s:\t%s\n", __stream=0x55e05bed5d70) at /usr/include/bits/stdio2.h:97 #1 NOUI_SavePrefs (not_if_script=<optimized out>) at noprefs.c:859 #2 0x00007f369d8b749b in NOUI_SetPrefs (name=0x55e05a686209 "DetectDiagonalStems", val1=0x7ffe63ebcd80, val2=0x0) at noprefs.c:431 #3 0x000055e05a67824e in ffw_init (debug=0) at /var/tmp/portage/app-text/pdf2htmlEX-0.14.6/work/pdf2htmlEX-0.14.6/src/util/ffw.c:77 #4 0x000055e05a665d62 in pdf2htmlEX::HTMLRenderer::HTMLRenderer (this=0x55e05be77c60, param=...) at /var/tmp/portage/app-text/pdf2htmlEX-0.14.6/work/pdf2htmlEX-0.14.6/src/HTMLRenderer/general.cc:58 #5 0x000055e05a648b14 in main (argc=<optimized out>, argv=<optimized out>) at /var/tmp/portage/app-text/pdf2htmlEX-0.14.6/work/pdf2htmlEX-0.14.6/src/pdf2htmlEX.cc:421 End of strace output: close(4) = 0 mprotect(0x7f7ff4ac5000, 4096, PROT_READ) = 0 brk(0x564b26d35000) = 0x564b26d35000 stat("/home/huettel/.config/fontforge", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 mkdir("/home", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel/.config", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel/.config/fontforge", 0755) = -1 EEXIST (File exists) stat("/home/huettel/.config/fontforge", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 mkdir("/home", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel/.config", 0755) = -1 EEXIST (File exists) mkdir("/home/huettel/.config/fontforge", 0755) = -1 EEXIST (File exists) open("/home/huettel/.config/fontforge/prefs", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 4 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x26d14c90} --- +++ killed by SIGSEGV (core dumped) +++ See also: https://groups.google.com/forum/#!topic/linux.debian.bugs.dist/2DvA7jt0Ydo
See also https://github.com/fontforge/fontforge/issues/2751
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ca40e3a175ee5cda3f248d1b84c6d8a596f3fcba commit ca40e3a175ee5cda3f248d1b84c6d8a596f3fcba Author: Andreas K. Hüttel <dilfridge@gentoo.org> AuthorDate: 2017-12-30 19:36:22 +0000 Commit: Andreas K. Hüttel <dilfridge@gentoo.org> CommitDate: 2017-12-30 19:36:55 +0000 app-text/pdf2htmlEX: Bump for debugging purposes. Builds with poppler-0.61 but crashes, see bug 642614 and bug 642210 Closes: https://bugs.gentoo.org/642614 Bug: https://bugs.gentoo.org/642210 See-also: https://github.com/akhuettel/pdf2htmlEX/releases/tag/gentoo-v0.14.6.1 Package-Manager: Portage-2.3.19, Repoman-2.3.6 app-text/pdf2htmlEX/Manifest | 1 + app-text/pdf2htmlEX/pdf2htmlEX-0.14.6.1.ebuild | 32 ++++++++++++++++++++++++++ 2 files changed, 33 insertions(+)}
When built with sys-devel/gcc-5.4.0-r3, the program works fine. Note, I only rebuilt pdf2htmlEX; the whole remaining system was still the code generated with gcc-6 on 17.0 profile rebuild.
Adding -no-pie to CXXFLAGS and CFLAGS makes things work also with gcc-6 ...
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=501d60fe95831fe5b55ab586fddbc966d5a39127 commit 501d60fe95831fe5b55ab586fddbc966d5a39127 Author: Andreas K. Hüttel <dilfridge@gentoo.org> AuthorDate: 2017-12-30 21:57:15 +0000 Commit: Andreas K. Hüttel <dilfridge@gentoo.org> CommitDate: 2017-12-30 21:57:31 +0000 app-text/pdf2htmlEX: Enforce building without PIE, bug 642210 To do this cleanly we require at least gcc-6 (otherwise the ebuild becomes one big mess). Closes: https://bugs.gentoo.org/642210 Package-Manager: Portage-2.3.19, Repoman-2.3.6 app-text/pdf2htmlEX/pdf2htmlEX-0.14.6.1.ebuild | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
For the record the fontforge issues are a *different* crash (that we start seeing now, depending on the input; completely different backtrace). -> new bug for that
