Your message dated Tue, 20 Sep 2016 22:15:11 +0000
with message-id <>
and subject line Bug#838316: Removed package(s) from unstable
has caused the Debian Bug report #799953,
regarding 4.9/5: incorrect double to integer conversion on i386
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
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--- Begin Message ---
Package: gcc
Version: 4:5.2.1-4
Severity: normal
Tags: upstream


I believe I've found a bug in GCC that affects plymouth and maybe
other packages on i386. The following minimal code produces an
incorrect result.

$ cat test.c 
#include <stdio.h>
#include <stdlib.h>

void main(int argc, char **argv) {
  float f = 9999999;
  double d = f*atoi(argv[1]);
  float g = d;
  int i = d;

  printf("f = %f\n", f);
  printf("d = %f\n", d);
  printf("g = %f\n", g);
  /* printf("i = %d\n", i); */
  printf("fractional part of d is %f\n", d-i);

$ gcc-4.9 -O1 -o test test.c && ./test 100
f = 9999999.000000
d = 999999900.000000
g = 999999900.000000
fractional part of d is 28.000000

The variable 'i' should contain the integral part of 'd', and 'd-i'
should give 0.000000. This is a standard method to calculate the
fractional part of a number. The bug disappears with optimization
turned off (-O0) or with uncommented printf statement. Assembly output
shows that an intermediate float is used for conversion instead of a

The bug is present in gcc-snapshot package from unstable, but not in
gcc-4.6 from wheezy.

$ gcc-5 -O1 -o test test.c && ./test 100
f = 9999999.000000
d = 999999900.000000
g = 999999900.000000
fractional part of d is 28.000000

$ gcc-4.6 -O1 -o test test.c && ./test 100
f = 9999999.000000
d = 999999872.000000
g = 999999872.000000
fractional part of d is 0.000000


$ gcc-4.9 -v
Using built-in specs.
Target: i586-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10' 
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr 
--program-suffix=-4.9 --enable-shared --enable-linker-build-id 
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls 
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug 
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify 
--enable-plugin --with-system-zlib --disable-browser-plugin 
--enable-java-awt=gtk --enable-gtk-cairo 
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-i386/jre --enable-java-home 
--with-arch-directory=i386 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar 
--enable-objc-gc --enable-targets=all --enable-multiarch --with-arch-32=i5
 86 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic 
--enable-checking=release --build=i586-linux-gnu --host=i586-linux-gnu 
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)

$ gcc-5 -v
Using built-in specs.
Target: i586-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 5.2.1-17' 
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr 
--program-suffix=-5 --enable-shared --enable-linker-build-id 
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu 
--enable-libstdcxx-debug --enable-libstdcxx-time=yes 
--with-default-libstdcxx-abi=new --enable-gnu-unique-object 
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib 
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo 
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-i386/jre --enable-java-home 
--with-arch-directory=i386 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar 
--enable-objc-gc --enable-targets=all --enable-multiarch --with-arch-32=i58
 6 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic 
--enable-checking=release --build=i586-linux-gnu --host=i586-linux-gnu 
Thread model: posix
gcc version 5.2.1 20150911 (Debian 5.2.1-17) 

gcc-4.6 -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.6.3-14' 
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr 
--program-suffix=-4.6 --enable-shared --enable-linker-build-id 
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext 
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6 
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu 
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object 
--enable-plugin --enable-objc-gc --enable-targets=all --with-arch-32=i586 
--with-tune=generic --enable-checking=release --build=i486-linux-gnu 
--host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.6.3 (Debian 4.6.3-14) 

-- System Information:
Debian Release: 8.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'stable'), 
(500, 'oldstable')
Architecture: i386 (i686)

Kernel: Linux 3.16.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gcc depends on:
ii  cpp    4:5.2.1-4
ii  gcc-5  5.2.1-17

Versions of packages gcc recommends:
ii  libc6-dev [libc-dev]  2.19-22

Versions of packages gcc suggests:
ii  autoconf      2.69-8
ii  automake      1:1.14.1-4
pn  bison         <none>
pn  flex          <none>
pn  gcc-doc       <none>
ii  gcc-multilib  4:5.2.1-4
ii  gdb           7.7.1+dfsg-5
ii  libtool       2.4.2-1.11
ii  make          4.0-8.1
ii  manpages-dev  3.74-1

-- no debconf information

--- End Message ---
--- Begin Message ---
Version: 4.9.4-2+rm

Dear submitter,

as the package gcc-4.9 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see

The version of this package that was in Debian prior to this removal
can still be found using

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing

Debian distribution maintenance software
Chris Lamb (the ftpmaster behind the curtain)

--- End Message ---

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