From 72317b333b85eed483ad00bcd4f40944019a7c13 Mon Sep 17 00:00:00 2001 From: "xtkoba+ruby@gmail.com" Date: Fri, 13 Aug 2021 13:45:53 +0000 Subject: [PATCH] Ignore `DW_FORM_ref_addr` [Bug #17052] Ignore `DW_FORM_ref_addr` form and other forms that are not supposed to be used currently. --- addr2line.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/addr2line.c b/addr2line.c index fed1a8da84e5..92c6da5e3bea 100644 --- a/addr2line.c +++ b/addr2line.c @@ -1592,14 +1592,31 @@ di_read_cu(DebugInfoReader *reader) } static void -read_abstract_origin(DebugInfoReader *reader, uint64_t abstract_origin, line_info_t *line) +read_abstract_origin(DebugInfoReader *reader, uint64_t form, uint64_t abstract_origin, line_info_t *line) { char *p = reader->p; char *q = reader->q; int level = reader->level; DIE die; - reader->p = reader->current_cu + abstract_origin; + switch (form) { + case DW_FORM_ref1: + case DW_FORM_ref2: + case DW_FORM_ref4: + case DW_FORM_ref8: + case DW_FORM_ref_udata: + reader->p = reader->current_cu + abstract_origin; + break; + case DW_FORM_ref_addr: + goto finish; /* not supported yet */ + case DW_FORM_ref_sig8: + goto finish; /* not supported yet */ + case DW_FORM_ref_sup4: + case DW_FORM_ref_sup8: + goto finish; /* not supported yet */ + default: + goto finish; + } if (!di_read_die(reader, &die)) goto finish; /* enumerate abbrev */ @@ -1664,7 +1681,7 @@ debug_info_read(DebugInfoReader *reader, int num_traces, void **traces, /* 1 or 3 */ break; /* goto skip_die; */ case DW_AT_abstract_origin: - read_abstract_origin(reader, v.as.uint64, &line); + read_abstract_origin(reader, v.form, v.as.uint64, &line); break; /* goto skip_die; */ } }