diff options
Diffstat (limited to 'libbacktrace/dwarf.c')
| -rw-r--r-- | libbacktrace/dwarf.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/libbacktrace/dwarf.c b/libbacktrace/dwarf.c index 6f56c46774b..aacbd3a453d 100644 --- a/libbacktrace/dwarf.c +++ b/libbacktrace/dwarf.c @@ -143,6 +143,8 @@ enum attr_val_encoding ATTR_VAL_REF_UNIT, /* An offset to other data within the .dwarf_info section. */ ATTR_VAL_REF_INFO, + /* An offset to other data within the alt .dwarf_info section. */ + ATTR_VAL_REF_ALT_INFO, /* An offset to data in some other section. */ ATTR_VAL_REF_SECTION, /* A type signature. */ @@ -858,7 +860,7 @@ read_attribute (enum dwarf_form form, struct dwarf_buf *buf, val->encoding = ATTR_VAL_NONE; return 1; } - val->encoding = ATTR_VAL_REF_SECTION; + val->encoding = ATTR_VAL_REF_ALT_INFO; return 1; case DW_FORM_GNU_strp_alt: { @@ -2200,6 +2202,19 @@ read_referenced_name_from_attr (struct dwarf_data *ddata, struct unit *u, || val->encoding == ATTR_VAL_REF_UNIT) return read_referenced_name (ddata, u, val->u.uint, error_callback, data); + if (val->encoding == ATTR_VAL_REF_ALT_INFO) + { + struct unit *alt_unit + = find_unit (ddata->altlink->units, ddata->altlink->units_count, + val->u.uint); + if (alt_unit == NULL) + return NULL; + + uint64_t offset = val->u.uint - alt_unit->low_offset; + return read_referenced_name (ddata->altlink, alt_unit, offset, + error_callback, data); + } + return NULL; } |