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Date:	Sun, 28 Jun 2015 12:52:40 +0200
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Subject:	GCC upgrade to 4.9.3 version request
From:	=?UTF-8?B?SmnFmcOtIEVuZ2VsdGhhbGVy?= <engycz AT gmail DOT com>
To:	cygwin AT cygwin DOT com
X-IsSubscribed:	yes

I would like to request the upgrade GCC to current 4.9.3 version.
4.9.2 version contains invalid code generation issue
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65504) marked with P1
importance which affects also cross compilers generated by 4.9.2
version. In general all binaries compiled with 4.9.2 version should be
rebuild because may be miscompiled.

If you compile this file http://pastebin.com/download.php?i=wvgu8Gz4
with -O2 and without it with 4.9.2 version you will receive different
results.

Also generating cross compiler with 4.9.2 version on Cygwin 32bit will fail.
----------
tar avxf gcc-5.1.0.tar.bz2
mkdir gcc-5.1.0/gmp  && tar avxf gmp-6.0.0a.tar.bz2 -C gcc-5.1.0/gmp
--strip-components=1
mkdir gcc-5.1.0/mpfr && tar avxf mpfr-3.1.2.tar.bz2 -C gcc-5.1.0/mpfr
--strip-components=1
mkdir gcc-5.1.0/mpc  && tar avxf mpc-1.0.3.tar.gz   -C gcc-5.1.0/mpc
--strip-components=1

mkdir build
cd build

../gcc-5.1.0/configure --target=arm-eabi --prefix=${PWD}/../gccbin
--enable-languages=c
make all-gcc
make install-gcc

cd ..

gccbin/bin/arm-eabi-gcc foo.c -O2 -S
--------------
File foo.c
--------------
int foo(int *argz_len , char *entry)
{
  int len = 0;

  len = *entry + 1;
  *argz_len -= len;
}

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