r267995 - in /trunk/libbacktrace: ChangeLog dwa...

[vries@gcc.gnu.org]

Author: vries
Date: Thu Jan 17 00:07:53 2019
New Revision: 267995

URL: https://gcc.gnu.org/viewcvs?rev=267995&root=gcc&view=rev
Log:
[libbacktrace] Handle alt FORMS without .gnu_debugaltlink

Handle DW_FORM_GNU_strp_alt and DW_FORM_GNU_ref_alt references robustly in
presence of missing .gnu_debugaltlink file.

2019-01-17  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (enum attr_val_encoding): Add ATTR_VAL_NONE.
	(read_attribute): Add altlink parameter.  Handle missing altlink for
	DW_FORM_GNU_strp_alt and DW_FORM_GNU_ref_alt.
	(find_address_ranges, build_address_map, build_dwarf_data): Add and
	handle altlink parameter.
	(read_referenced_name, read_function_entry): Add argument to
	read_attribute call.

Modified:
    trunk/libbacktrace/ChangeLog
    trunk/libbacktrace/dwarf.c