diff options
| author | Alan Modra <amodra@gmail.com> | 2021-05-18 23:41:10 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2021-05-19 11:07:41 +0930 |
| commit | 1b3892bedc7674dfd86b1b0285951271cd82de63 (patch) | |
| tree | e77445b283e53e6ea4f4a279b54f2d3bcd0d4c01 /binutils | |
| parent | 9d9e2a340ba50670f406afa314acaa9a2c34ec64 (diff) | |
| download | gdb-1b3892bedc7674dfd86b1b0285951271cd82de63.zip gdb-1b3892bedc7674dfd86b1b0285951271cd82de63.tar.gz gdb-1b3892bedc7674dfd86b1b0285951271cd82de63.tar.bz2 | |
PR27884, skip_attr_bytes: Assertion (data) <= (end) failed
PR 27884
* dwarf.c (get_type_abbrev_from_form): Replace cu_offset_return
param with map_return, and return map for DW_FORM_ref_addr.
(get_type_signedness): Adjust calls to get_type_abbrev_from_form.
Pass returned cu map start and end to recursive call.
(read_and_display_attr_value): Similarly.
Diffstat (limited to 'binutils')
| -rw-r--r-- | binutils/ChangeLog | 9 | ||||
| -rw-r--r-- | binutils/dwarf.c | 42 |
2 files changed, 32 insertions, 19 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 6767729..8373280 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,5 +1,14 @@ 2021-05-19 Alan Modra <amodra@gmail.com> + PR 27884 + * dwarf.c (get_type_abbrev_from_form): Replace cu_offset_return + param with map_return, and return map for DW_FORM_ref_addr. + (get_type_signedness): Adjust calls to get_type_abbrev_from_form. + Pass returned cu map start and end to recursive call. + (read_and_display_attr_value): Similarly. + +2021-05-19 Alan Modra <amodra@gmail.com> + PR 27879 * sysdump.c (getBARRAY): Sanity check size against max. (getINT): Avoid UB shift left. diff --git a/binutils/dwarf.c b/binutils/dwarf.c index beac226..6dd9878 100644 --- a/binutils/dwarf.c +++ b/binutils/dwarf.c @@ -2059,13 +2059,13 @@ skip_attr_bytes (unsigned long form, associated with it. */ static abbrev_entry * -get_type_abbrev_from_form (unsigned long form, - unsigned long uvalue, - dwarf_vma cu_offset, - const struct dwarf_section * section, - unsigned long * abbrev_num_return, - unsigned char ** data_return, - unsigned long * cu_offset_return) +get_type_abbrev_from_form (unsigned long form, + unsigned long uvalue, + dwarf_vma cu_offset, + const struct dwarf_section *section, + unsigned long *abbrev_num_return, + unsigned char **data_return, + abbrev_map **map_return) { unsigned long abbrev_number; abbrev_map * map; @@ -2132,12 +2132,12 @@ get_type_abbrev_from_form (unsigned long form, return NULL; } - if (cu_offset_return != NULL) + if (map_return != NULL) { if (form == DW_FORM_ref_addr) - * cu_offset_return = map->start; + *map_return = map; else - * cu_offset_return = cu_offset; + *map_return = NULL; } READ_ULEB (abbrev_number, data, section->start + section->size); @@ -2214,21 +2214,23 @@ get_type_signedness (abbrev_entry *entry, case DW_AT_type: /* Recurse. */ { - abbrev_entry * type_abbrev; - unsigned char * type_data; - unsigned long type_cu_offset; + abbrev_entry *type_abbrev; + unsigned char *type_data; + abbrev_map *map; type_abbrev = get_type_abbrev_from_form (attr->form, uvalue, cu_offset, section, NULL /* abbrev num return */, - & type_data, - & type_cu_offset); + &type_data, + &map); if (type_abbrev == NULL) break; - get_type_signedness (type_abbrev, section, type_data, end, type_cu_offset, + get_type_signedness (type_abbrev, section, type_data, + map ? section->start + map->end : end, + map ? map->start : cu_offset, pointer_size, offset_size, dwarf_version, is_signed, nesting + 1); } @@ -2951,13 +2953,15 @@ read_and_display_attr_value (unsigned long attribute, bool is_signed = false; abbrev_entry *type_abbrev; unsigned char *type_data; - unsigned long type_cu_offset; + abbrev_map *map; type_abbrev = get_type_abbrev_from_form (form, uvalue, cu_offset, - section, NULL, & type_data, & type_cu_offset); + section, NULL, &type_data, &map); if (type_abbrev != NULL) { - get_type_signedness (type_abbrev, section, type_data, end, type_cu_offset, + get_type_signedness (type_abbrev, section, type_data, + map ? section->start + map->end : end, + map ? map->start : cu_offset, pointer_size, offset_size, dwarf_version, & is_signed, 0); } |