From: Giuliano Procida <gprocida@google.com>
To: libabigail@sourceware.org
Subject: abg-dwarf-reader.cc - trouble with GNU hash tables
Date: Thu, 19 Mar 2020 16:42:21 +0000 [thread overview]
Message-ID: <CAGvU0HkvUN8479GhSkpQEEnCEfSOnQV7MwCc-+uZoS6EQrjsmQ@mail.gmail.com> (raw)
Looking up symbols in shared objects with .gnu.hash sections doesn't
always work. There is something not right with the Bloom filter code.
Testing notes follow. Ideally we should create files targeting a
diversity of architectures (word size, endianness, special ones like
Alpha and S390).
for y in {0..999}; do echo $(printf "int x%03d = $y;" $y); done > extern.c
gcc -g -Wall -W -fPIC --shared -c extern.c -o extern.o
ld -fPIC --shared --soname foo extern.o -o extern.so
for y in {0..999}; do sym=$(printf "x%03d" $y); build/tools/abisym
extern.so "$sym"; done | grep -c ^could
--> should be 0
Giuliano.
next reply other threads:[~2020-03-19 16:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-19 16:42 Giuliano Procida [this message]
2020-03-20 22:22 ` Dodji Seketeli
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