David, Support for native TLS on AIX exposed a problem with this patch. A similar problem exists on Solaris 9.
Some helper functions for TLS on AIX and Solaris 9 only are provided by libpthread. Promoting ic related variables to TLS breaks profiling of non-pthread appications. I completely agree with reducing race conditions and improving support for profiling of pthread applications, but why should this change be enabled for applications not built and run as multi-threaded? This feature should test more than the existence of target TLS support. Thanks, David
