On Wed, Feb 16, 2022 at 12:46:32PM +0900, ISHIKAWA,chiaki wrote: > This is tangent to the original question, but this part: > > > with split-dwarf (which rnglistx and strx > form codes doesn't support yet) > > valgrind does support bulk of data generated by --split-dwarf (gcc), > doesn't it?
No, it doesn't. valgrind won't read .dwo files/sections at all which split-dwarf uses. > The above refers to "doesn't support" rnglistx and strx form codes? And addrx forms. These are normally only used (by gcc) for split-dwarf and involve an extra indirection through an index to reach the value of the attribute. These forms are technically valid in non-split-dwarf (with DWARF5) but not supported by valgrind. > I am asking this because I have checked mozilla thunderbird code > which is compiled using --split-dwarf of GCC and valgrind reports > reasonably sane diagnosis so far. valgrind can report valid diagnostics with DWARF debuginfo, but it might be less accurate, for example it won't report on inlined functions. I happened to give a talk on that recently: https://fosdem.org/2022/schedule/event/valgrind_debuginfo/ (That talk doesn't cover split-dwarf though) Cheers, Mark _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
