https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
--- Comment #15 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I now can build Firefox with gdb, but debugging experience is not optimal. Gdb starts and when I start firefox it stops itself. After doing "fg" it complains about dwarf headers hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ gdb firefox GNU gdb (GDB) 8.2.50.20181222-git Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from firefox... Dwarf Error: wrong version in compilation unit header (is 12062, should be 2, 3, 4 or 5) [in module /aux/hubicka/firefox2018-release-trunktest2/dist/bin/firefox] (No debugging symbols found in firefox) warning: File "/aux/hubicka/firefox-2018/firefox/.gdbinit" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load". To enable execution of this file add add-auto-load-safe-path /aux/hubicka/firefox-2018/firefox/.gdbinit line to your configuration file "/home/hubicka/.gdbinit". To completely disable this security protection add set auto-load safe-path / line to your configuration file "/home/hubicka/.gdbinit". For more information about this security protection see the "Auto-loading safe path" section in the GDB manual. E.g., run from the shell: info "(gdb)Auto-loading safe path" (gdb) run Starting program: /aux/hubicka/firefox2018-release-trunktest2/dist/bin/firefox [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [4]+ Stopped gdb firefox hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ fg gdb firefox Dwarf Error: wrong version in compilation unit header (is 82, should be 2, 3, 4 or 5) [in module /aux/hubicka/firefox2018-release-trunktest2/dist/bin/libnspr4.so] [4]+ Stopped gdb firefox hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ fg
