glib/assert-msg-test.gdb at 807e4fdcdb319e9e9db9a7972fdd2e09ca41a54b - glib - openSUSE Gitea

luc14n0/glib

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Philip Withnall 82adf7b5da tests: Work around a gdb bug in assert-msg-test

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

2017-11-27 11:44:08 +00:00

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 run
 set print elements 0
 # Work around https://sourceware.org/bugzilla/show_bug.cgi?id=22501
 print *((char**) &__glib_assert_msg)
 quit