Re: [PATCH] gdb: Fix "info os <unknown>" command

[Tom Tromey <tom@tromey.com>]

>>>>> "Paul" == Paul Marechal <paul.marechal@ericsson.com> writes:

Paul> Running `info os someUnknownOsType` is crashing when gdb is built with
Paul> -D_GLIBCXX_DEBUG:

Paul> 	/usr/include/c++/5/debug/vector:439:error: attempt to
Paul> 	access an element in
Paul> 	    an empty container.

Thank you for the patch.
Someday I hope to send a patch to enable -D_GLIBCXX_DEBUG by default
when building gdb in not-release mode.

Paul> This is a regression in gdb 8.2 and this patch restores the behavior of
Paul> previous versions.

Perhaps it isn't too late to put this on the 8.2 branch, as it seems
simple enough.

Paul> 	PR gdb/23974
Paul> 	* target.c (target_read_stralloc): Check for empty vector.

Paul> gdb/testsuite/ChangeLog:

Paul> 	PR gdb/23974
Paul> 	* gdb.base/info-os.exp: Check return for unknown "info os" type.

This is ok.

Tom