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From Geir Magnusson Jr <g...@pobox.com>
Subject Re: [drlvm] uses deprecated pthread function
Date Tue, 25 Jul 2006 21:18:01 GMT

Gregory Shimansky wrote:
> Hello
> I've tried to build drlvm on Linux and it didn't compile because when 
> compiling signals_ia32.cpp file compiler produced a warning that 
> pthread_attr_getstackaddr is deprecated. I looked in /usr/include/pthread.h 
> [1] and found out that it is really deprecated by __attribute_deprecated__.
> I don't know why everything is fine for others but for me gcc [2] does gives a 
> warning on this function. I used the recommended replacement 
> pthread_attr_getstack which gives both address and stack size in one call. 
> The patch is in HARMONY-977. StackTest and other vm smoke tests pass for me 
> now.

Weird.  It always has built for me on ubuntu 5/6 and passed the smoke tests.

> Maybe it would be better to call pthread_attr_getstack just once since it 
> provides all necessary stack information and eliminate redundant 
> find_stack_addr and find_stack_size. Each of them calls pthread_getattr_np 
> just to destroy pthread_attr 2 lines later. But I made the minimal fix which 
> doesn't change functions layout because the same functions exist for windows. 
> Probably they are meant to be moved to portlib?
> For the future reference, to avoid warnings about deprecated functions (which 
> isn't really good IMHO) it is necessary to 
> specify -Wno-deprecated-declarations, not the -Wno-deprecated (it is meant 
> for C++ code only) option which we currently have in 
> build/make/targets/common_vm.xml.
> [1]
> GNU C Library stable release version 2.3.6, by Roland McGrath et al.
> Copyright (C) 2005 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.
> There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
> Compiled by GNU CC version 3.4.6 (Gentoo 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9).
> Compiled on a Linux 2.6.11 system on 2006-06-25.
> Available extensions:
>         GNU libio by Per Bothner
>         crypt add-on version 2.1 by Michael Glad and others
>         Native POSIX Threads Library by Ulrich Drepper et al
>         The C stubs add-on version 2.1.2.
>         GNU Libidn by Simon Josefsson
>         BIND-8.2.3-T5B
>         NIS(YP)/NIS+ NSS modules 0.19 by Thorsten Kukuk
> Thread-local storage support included.
> [2]
> gcc (GCC) 3.4.6 (Gentoo 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9)

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