On Tue, Oct 11, 2022 at 08:14:53AM -0600, Simon Glass wrote: > Hi Tom, > > On Sat, 8 Oct 2022 at 21:33, Simon Glass <[email protected]> wrote: > > > > This series contains a few clang-14 fixes to partly resolve the problems > > shown by [1]. > > > > The event_dump problem is that the symbol name is not printed by > > addr2line even though it seems to be present: > > > > Without LTO: > > > > $ addr2line -e u-boot.clang14.no-lto 4a37f > > addr2line: DWARF error: invalid or unhandled FORM value: 0x23 > > vbe_simple.c:? > > > > $ nm u-boot.clang14.no-lto |grep 4a37f > > 000000000004a37f t bootmeth_vbe_simple_ft_fixup > > > > With LTO is even worse: > > > > $ addr2line -e u-boot.clang14.lto 2d2ee0 > > addr2line: DWARF error: invalid or unhandled FORM value: 0x23 > > ??:0 > > > > $ nm u-boot.clang14.lto |grep 4dad1 > > 000000000004dad1 t bootmeth_vbe_simple_ft_fixup > > > > Perhaps this is a bug in addr2line or the clang DWARF output? > > > > [1] https://source.denx.de/u-boot/u-boot/-/jobs/510282#L287 > > I should have mentioned that I can respin the series to deal with > this, perhaps by not requiring the function name to be present when > clang is used (or just at all?) > > Plus I have one more patch to add for the LTO stuff. > > Let me know what you think and I can respin this this.
Maybe it's worth raising a question on one of the LLVM lists? This seems fairly odd. I would like to move to LLVM-14 / gcc-12.2 for CI, for v2023.01, but there's still other warnings to be fixed too, so we have a little time yet. -- Tom
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