[Bug debug/98875] DWARF5 as default causes perf probe to hang
mark at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu Feb 18 19:28:47 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98875
Mark Wielaard <mark at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |mark at gcc dot gnu.org
--- Comment #2 from Mark Wielaard <mark at gcc dot gnu.org> ---
I didn't realize this was also posted as a bug. There was some discussion on
the gcc-patches mailinglist here:
https://gcc.gnu.org/pipermail/gcc-patches/2021-January/thread.html#564485
The conclusion was that this was simply because of some ancient installation of
elfutils/libdw (0.168, which is from before the DWARF5 spec was released). Make
sure you have elfutils libdw version 0.172 or newer when dealing with DWARF5.
Latest elfutils release is 0.183.
I believe this issue can be closed, or are there any other issues with perf?
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