From 0b3ad397ef2dc54602d7966af53515061312733c Mon Sep 17 00:00:00 2001 From: Vladimir Mezentsev Date: Mon, 18 Dec 2023 21:04:57 -0800 Subject: gprofng: 31169 Source code locations can not be found in a C++ application gprofng incorrectly reads the form of the DW_FORM_ref_addr attribute for DWARF Version 3 or later. From DWARF specification: References that use the attribute form DW_FORM_ref_addr are specified to be four bytes in the DWARF 32-bit format and eight bytes in the DWARF 64-bit format, while DWARF Version 2 specifies that such references have the same size as an address on the target system. 2023-12-18 Vladimir Mezentsev PR gprofng/31169 * src/DwarfLib.cc: Fix the reader for DW_FORM_ref_addr. --- gprofng/src/DwarfLib.cc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'gprofng') diff --git a/gprofng/src/DwarfLib.cc b/gprofng/src/DwarfLib.cc index 90c3e6e..6273282 100644 --- a/gprofng/src/DwarfLib.cc +++ b/gprofng/src/DwarfLib.cc @@ -2034,7 +2034,10 @@ DwrCU::set_die (Dwarf_Die die) atf->u.offset = debug_infoSec->GetULEB128 (); break; case DW_FORM_ref_addr: - atf->u.offset = debug_infoSec->GetADDR (); + if (version > 2) + atf->u.offset = debug_infoSec->GetRef (); + else + atf->u.offset = debug_infoSec->GetADDR (); break; case DW_FORM_sec_offset: atf->u.offset = debug_infoSec->GetRef (); -- cgit v1.1