I was trying to debug with DF_REF_LOC in gdb on linux, and got:
(gdb) p DF_REF_LOC (*ref) == recog_data.operand_loc[op]
No symbol "__null" in current context.
My fingers were not amused. I found if I did:
(gdb) macro define __null 0
then I could do:
(gdb) p DF_REF_LOC (*ref) == recog_data.operand_loc[op]
$3 = true
and my fingers were again happy.
I checked this in.
2013-05-14 Mike Stump <mikest...@comcast.net>
* gdbinit.in: Add __null.
Index: gdbinit.in
===================================================================
--- gdbinit.in (revision 198896)
+++ gdbinit.in (working copy)
@@ -184,6 +184,7 @@ end
# Define some macros helpful to gdb when it is expanding macros.
macro define __FILE__ "gdb"
macro define __LINE__ 1
+macro define __null 0
# Gracefully handle aborts in functions used from gdb.
set unwindonsignal on
------------------------------
