Bug 9978 – DW_OP_bit_piece does not allow DW_OP_reg

Bug 9978 - DW_OP_bit_piece does not allow DW_OP_reg


Summary:	DW_OP_bit_piece does not allow DW_OP_reg

Status:	RESOLVED FIXED

Product:	gdb
Classification:	Unclassified
Component:	gdb
Version:	unknown

Importance:	P2 normal
Target Milestone:	7.2
Assigned To:	Tom Tromey

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2009-03-21 22:56 UTC by Jan Hubicka
Modified:	2010-05-21 21:34 UTC (History)
CC List:	2 users (show)

See Also:
Host:	x86_64-pc-linux-gnu
Target:
Build:
Last reconfirmed:	2010-05-07 21:02:53

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Description Jan Hubicka 2009-03-21 22:56:27 UTC

DW_op_reg in DW_OP_bit_piece is refused:
DWARF-2 expression error: DW_OP_reg operations must be used either alone or in
conjuction with DW_OP_piece.

I believe it is wrong, since DW_OP_bit_piece has same restrictions as
DW_OP_piece.  I would like to use DW_OP_bit_piece in GCC to output SRAed
structures, so it would be cool to fix this ;)

Comment 1 Tom Tromey 2009-03-22 01:03:45 UTC

Confirmed.

AFAICT DW_OP_bit_piece is not handled at all.

Comment 2 Tom Tromey 2010-05-21 21:34:40 UTC

I checked in a fix.