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Re: [Tinycc-devel] segmentation fault on any code compiled by tcc with g
From: |
Michael Matz |
Subject: |
Re: [Tinycc-devel] segmentation fault on any code compiled by tcc with glibc 2.21 |
Date: |
Thu, 17 Dec 2015 07:24:09 +0100 (CET) |
User-agent: |
Alpine 2.20 (LSU 67 2015-01-07) |
Hi,
On Tue, 15 Dec 2015, Vincent Lefevre wrote:
With glibc 2.21 (Debian/unstable on x86_64), on any code compiled by
tcc segfaults. This occurs with both old tcc (tcc
0.9.27~git20140923.9d7fb33-3 Debian package) and mob. I wonder whether
this is a bug in tcc or in the glibc.
According to Aurelien Jarno, this is actually due to new binutils
relocations (and the Debian glibc 2.21-4 package is built with a recent
binutils, hence the problem with it).
Details:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808008#22
Blaeh. I didn't consider the case of the libc runtime startup .o files
when agreeing to the new relocs. Arguably those object files exposed to
every linker trying to create user-space programs shouldn't use the new
relocs (they provide a very minor performance benefit sometimes) even
with new binutils (and so that's a QoI issue in glibc), but it's easy
enough to deal with them in tcc.
Try newest mob again.
Ciao,
Michael.