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paulfloyd / freebsd_valgrind

Git repo used to Upstream the FreeBSD Port of Valgrind
GNU General Public License v2.0
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gdbserver_tests/mcmain_pic fails #100

Closed paulfloyd closed 2 years ago

paulfloyd commented 4 years ago

The test is disabled. It fails because Valgrind is not stopping at the specified breakpoint.

Comment says

# test that gdbserver/gdb properly handle a PIC executable
# On linux, this implies a proper transfer of the auxv
# information via the gdbserver protocol packet qXfer:auxv:read:
# The content of the auxv data can be shown by gdb using
# gdb command 'info auxv'

So try info auxv.

Also try -d x4 (the code has dlog(4 for auxv).

Compilation is disabled -fPIC with clang and FLAG_PIE with ld

What does PIE do? -pie is the option and it causes the exe to be loadable anywhere (rather than a fixed place like 0x200000)

(gdb) info auxv No auxiliary vector found, or failed reading it.

I tried vgdb -d -d -d -d anmd no sign of qXfer:auxv:read:

paulfloyd commented 2 years ago

Closing this as WONTFIX for now