From 81955f8048b36272f7e25ee7a8ae9f91590da42b Mon Sep 17 00:00:00 2001 From: Ed Maste Date: Mon, 14 Mar 2016 14:06:00 +0000 Subject: Allow any build-id length between 4 and 20 bytes inclusive Build-id support is being added to lld and by default it may produce a 64-bit build-id. Prior to this change lldb would reject such a build-id. However, it then falls back to a 4-byte crc32, which is a poorer quality identifier. Differential Revision: http://reviews.llvm.org/D18096 llvm-svn: 263432 --- lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp') diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp index acde882b63f..e20f994576e 100644 --- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp +++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp @@ -1410,8 +1410,9 @@ ObjectFileELF::RefineModuleDetailsFromNote (lldb_private::DataExtractor &data, l // Only bother processing this if we don't already have the uuid set. if (!uuid.IsValid()) { - // 16 bytes is UUID|MD5, 20 bytes is SHA1 - if ((note.n_descsz == 16 || note.n_descsz == 20)) + // 16 bytes is UUID|MD5, 20 bytes is SHA1. Other linkers may produce a build-id of a different + // length. Accept it as long as it's at least 4 bytes as it will be better than our own crc32. + if (note.n_descsz >= 4 && note.n_descsz <= 20) { uint8_t uuidbuf[20]; if (data.GetU8 (&offset, &uuidbuf, note.n_descsz) == nullptr) -- cgit v1.2.3