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From: "g_sauthoff at web dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libmudflap/44661] Link order (?) might cause threaded libmudflap to assert
Date: Sat, 02 Mar 2013 20:42:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44661

--- Comment #5 from Georg Sauthoff <g_sauthoff at web dot de> 2013-03-02 20:42:25 UTC ---
I can reproduce this issue on Ubuntu 10.04 (gcc 4.4.3).

That means:

$ gcc -o foo foo.c  -fmudflapth -lpthread -lmudflapth
$ ./foo

-> mf: erroneous reentrancy detected in `__mf_check'

$ gcc -o foo foo.c  -fmudflapth -pthread -lmudflapth
$ ./foo

-> foo 1


On Fedora 17 (x86-64) (gcc 4.7.2) the issue is not present:

$ gcc -lpthread -o foo foo.c -fmudflapth -lpthread -lmudflap
$ ./foo

-> foo 1