patches/gdb/6.8/130-reg-no-longer-active.patch
author Joachim Nilsson <jocke@vmlinux.org>
Sun Jan 03 16:46:58 2010 +0100 (2010-01-03)
changeset 1685 ecccce88fc71
permissions -rw-r--r--
debug/ltrace: Add support for ltrace-0.5.3

From this version of ltrace the maintainer has removed support for
GNU Autotools, so the patch sets needed to be reworked.

Included is the latest Debian patch, by the Debian ltrace maintainer
Juan Cespedes <cespedes@debian.org>, the OpenEmbedded patches for cross
compiling, by Khem Raj <raj.khem@gmail.com> and a further set of patches
by Joachim Nilsson <jocke@vmlinux.org> for crosstool-NG.
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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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