It seems that when GLib is compiled without CFLAGS=-g, gdb can’t work
out the size of __glib_assert_msg, so assumes it’s 4 bytes — even on
64-bit systems. This causes it to not read the most significant 4 bytes
of the assertion message pointer, and hence it can’t print the stored
assertion message. This causes assert-msg-test to fail.
The upstream gdb bug is
https://sourceware.org/bugzilla/show_bug.cgi?id=22501.
Work around that by referencing and dereferencing __glib_assert_msg so
that gdb treats it as a pointer of sizeof(char*) rather than of the size
it incorrectly calculated from the library’s symbol table (or through
some other mystical process).
Signed-off-by: Philip Withnall <withnall@endlessm.com>
https://bugzilla.gnome.org/show_bug.cgi?id=782057
gdb is run in batch mode, and can leave leave the program being
executed/debugged running when the batchfile is finished. Explicitly
"quit"ing the subprocess prevents it from leaving the stray subprocess
when gdb finishes.
https://bugzilla.gnome.org/show_bug.cgi?id=731366
