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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Fedora GDB patches <invalid@email.com>
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Date: Fri, 27 Oct 2017 21:07:50 +0200
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Subject: gdb-6.8-bz436037-reg-no-longer-active.patch
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;; Fix register assignments with no GDB stack frames (BZ 436037).
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;;=push+jan: This fix is incorrect.
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diff --git a/gdb/valops.c b/gdb/valops.c
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--- a/gdb/valops.c
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+++ b/gdb/valops.c
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@@ -1104,6 +1104,8 @@ value_assign (struct value *toval, struct value *fromval)
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struct gdbarch *gdbarch;
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int value_reg;
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+ value_reg = VALUE_REGNUM (toval);
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+
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/* Figure out which frame this is in currently.
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We use VALUE_FRAME_ID for obtaining the value's frame id instead of
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@@ -1113,8 +1115,14 @@ value_assign (struct value *toval, struct value *fromval)
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frame. */
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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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-
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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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