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Fix bug reported by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>:
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See: http://sourceware.org/ml/crossgcc/2009-05/msg00055.html
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https://bugzilla.redhat.com/show_bug.cgi?id=436037
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Fix from: http://cvs.fedoraproject.org/viewvc/devel/gdb/gdb-6.8-bz436037-reg-no-longer-active.patch?revision=1.1
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diff -d -urpN src.0/gdb/valops.c src.1/gdb/valops.c
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--- src.0/gdb/valops.c 2008-07-27 04:00:03.000000000 +0200
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+++ src.1/gdb/valops.c 2008-07-31 15:17:42.000000000 +0200
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@@ -813,10 +813,18 @@ value_assign (struct value *toval, struc
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struct frame_info *frame;
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int value_reg;
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- /* Figure out which frame this is in currently. */
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- frame = frame_find_by_id (VALUE_FRAME_ID (toval));
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value_reg = VALUE_REGNUM (toval);
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+ /* Figure out which frame this is in currently. */
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+ frame = frame_find_by_id (VALUE_FRAME_ID (toval));
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+ /* "set $reg+=1" should work on programs with no debug info,
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+ but frame_find_by_id returns NULL here (RH bug 436037).
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+ Use current frame, it represents CPU state in this case.
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+ If frame_find_by_id is changed to do it internally
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+ (it is contemplated there), remove this. */
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+ if (!frame)
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+ frame = get_current_frame ();
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+ /* Probably never happens. */
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if (!frame)
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error (_("Value being assigned to is no longer active."));
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