Re: toolchain/56153: gdb is broken for alpha

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

The following reply was made to PR toolchain/56153; it has been noted by GNATS.

From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
To: Christos Zoulas <christos%zoulas.com@localhost>, gnats-bugs%netbsd.org@localhost
Cc: toolchain-manager%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost
Subject: Re: toolchain/56153: gdb is broken for alpha
Date: Fri, 7 May 2021 22:45:40 +0900

 On 2021/05/07 22:16, Christos Zoulas wrote:
 > Looks like a memory allocation issue, can you run with the debugging flags for jemalloc or link with a different memory allocator?
 > Perhaps this is a generic alpha jemalloc bug.
 
 Hmm, (1)-(3) below results in the same crash for ``gdb cat cat.core''.
 
 (1) Replace libc with that with old jemalloc by LD_LIBRARY_PATH
 (2) Set LD_PRELOAD=/usr/lib/libbsdmalloc.so
 (3) Set LD_PRELOAD=/usr/lib/libgnumalloc.so
 
 With libc built with -DJEMALLOC_DEBUG:
 
 ----
 $ LD_LIBRARY_PATH=~/jemalloc_debug gdb cat cat.core
 GNU gdb (GDB) 11.0.50.20200914-git
 ...(snip)...
 Reading symbols from cat...
 Reading symbols from /usr/libdata/debug//bin/cat.debug...
 [New process 18637]
 <jemalloc>: /usr/src/external/bsd/jemalloc/lib/../dist/src/rtree.c:205: Failed assertion: "!dependent || leaf != NULL"
 [1]   Abort trap (core dumped) LD_LIBRARY_PATH=~/jemalloc_debug gdb cat cat.core
 ----
 
 Thanks,
 rin