Re: filing bug reports for GCC 8 build failures

[Alastair McKinstry]

Hi,

FTBFS bugs haveveen filed for packages that fail under gcc8.

Unfortunately that includes fortran packages: gfortran 8 has changed its
mod file format again, so all packages depending on other fortran libs
will fail until all are rebuilt under gfortran 8 as the default compiler.

Can we downgrade these to important, and plan the gfortran transition
please?

In a related development, i've uploaded dh-fortran-mod, originally
written by Sébastien Villemot. This is a debhelper extension to track
fortran mod file versions (making upgrades easier) and installations. It
would be good to use this if possible.

Assuming its accepted (its only been in the NEW queue 2 days), I will
submit patches to the appropriate Fortran packages (~15-20 the last time
I checked).

regards

Alastair



On 29/04/2018 01:46, Matthias Klose wrote:
> Hi,
>
> I'm intending to update binutils to 2.31 and GCC to 2.8.x for the buster
> release.  binutils 2.31 has an upstream release date around Agust 2018, and 
> GCC
> 8 will be released next week (already available in unstable).  It's usually 
> this
> time when I start filing bug reports for packages which don't build with the
> next GCC version.  Unfortunately we cannot have a full test rebuild of Debian
> unstable, and Debian unstable built with GCC 8. I would appreciate such a test
> rebuild in Debian, however if that cannot be done, I'd like to file bug 
> reports
> using a test rebuild done for Ubuntu.  I realize that this is not an ideal
> situation, however it would give maintainers a hint about upcoming issues.
> These bug reports would be severity important, and not blocking any package
> transitions.
>
> The Ubuntu test rebuild using GCC 8 can be seen at
> http://qa.ubuntuwire.org/ftbfs/rebuilds/test-rebuild-20180408-gcc8-bionic.html
>
> Matthias
>
-- 
Alastair McKinstry, , , 
https://diaspora.sceal.ie/u/amckinstry
Misentropy: doubting that the Universe is becoming more disordered. 

Bug#897416: mpfr4: FTBFS on kfreebsd-amd64

[Vincent Lefevre]

[Cc mpfr list]

On 2018-05-02 13:45:30 +0200, Vincent Lefevre wrote:
> and in the configure output:
> 
> checking if compiler knows _Decimal64... no

Note that it is "yes" for kfreebsd-i386:

  
https://buildd.debian.org/status/fetch.php?pkg=mpfr4=kfreebsd-i386=4.0.1-1=1523420566=0

> It should have been "yes", unless it is known that _Decimal64 does not
> work on FreeBSD. But the GCC manual does not mention OS related issues
> for _Decimal64:
> 
>   https://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html

Well, I've looked at the test done by MPFR, and it is awkward:

  volatile _Decimal64 x = 1;
  union { double d; _Decimal64 d64; } y;
  if (x != x) return 83;
  y.d64 = 1234567890123456.0dd;
  return y.d == 0.14894469406741037E-123 ? 80 :
 y.d == 0.59075095508629822E-68  ? 81 : 82;

If there is any issue related to double (such as the use of
x87 extended precision), this may fail. Is this the reason
for kfreebsd-amd64?

I can see 3 solutions:

1. Still compare to double, but use the hex format for the double
values to avoid any inexact base 10 to base 2 conversion.

Note: IMHO, if _Decimal64 exists, one can safely assume that the
hex format is supported.

2. Use uint64_t instead of double. Similarly, IMHO, if _Decimal64
exists, uint64_t probably exists too.

3. Use an array of 8 unsigned char instead of double, and consider
the two possible cases of endianness that can occur nowadays.

-- 
Vincent Lefèvre  - Web: 
100% accessible validated (X)HTML - Blog: 
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Processed: Re: Bug#897416: mpfr4: FTBFS on kfreebsd-amd64

[Debian Bug Tracking System]

Processing control commands:

> reassign -1 gcc-7
Bug #897416 [src:mpfr4] mpfr4: FTBFS on kfreebsd-amd64
Bug reassigned from package 'src:mpfr4' to 'gcc-7'.
No longer marked as found in versions mpfr4/4.0.1-1.
Ignoring request to alter fixed versions of bug #897416 to the same values 
previously set
> retitle -1 gcc: Decimal float support is not enabled on kfreebsd-amd64
Bug #897416 [gcc-7] mpfr4: FTBFS on kfreebsd-amd64
Changed Bug title to 'gcc: Decimal float support is not enabled on 
kfreebsd-amd64' from 'mpfr4: FTBFS on kfreebsd-amd64'.

-- 
897416: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=897416
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Bug#897416: mpfr4: FTBFS on kfreebsd-amd64

[James Clarke]

Control: reassign -1 gcc-7
Control: retitle -1 gcc: Decimal float support is not enabled on kfreebsd-amd64

On 2 May 2018, at 10:38, Svante Signell  wrote:
> 
> Source: mpfr4
> Version: 4.0.1-1
> Severity: important
> Tags: patch
> User: debian-...@lists.debian.org
> Usertags: kfreebsd
> 
> Hi,
> 
> mpfr4 FTBFS on kFreebsd-amd64 due to mismatches in the debian/libmpfr6.symbols
> file. Attached is a file with the symbols generated from the build:
> libmpfr6.symbols.kfreebsd-amd64.
> 
> Thanks!

You're right that the symbols file is currently wrong, but IMO gcc should have
decimal float support enabled for kfreebsd-amd64. It's enabled for
kfreebsd-i386 by virtue of the fact that i?86*-*-gnu* (for Hurd) matches
kfreebsd-i386's tuple, but there's no corresponding x86_64*-*-gnu* for a future
64-bit Hurd, and thus kfreebsd-amd64's tuple is not matched[0].

James

[0] https://github.com/gcc-mirror/gcc/blob/trunk/config/dfp.m4#L23-L26

Bug#897416: mpfr4: FTBFS on kfreebsd-amd64

[Vincent Lefevre]

On 2018-05-02 11:38:14 +0200, Svante Signell wrote:
> mpfr4 FTBFS on kFreebsd-amd64 due to mismatches in the debian/libmpfr6.symbols
> file. Attached is a file with the symbols generated from the build:
> libmpfr6.symbols.kfreebsd-amd64.

This is due to:

--- debian/libmpfr6.symbols (libmpfr6_4.0.1-1_kfreebsd-amd64)
+++ dpkg-gensymbolst5OG2p   2018-04-04 16:57:36.0 +
@@ -189,7 +189,7 @@
  mpfr_get_d1@Base 3.1.3
  mpfr_get_d@Base 3.1.3
  mpfr_get_d_2exp@Base 3.1.3
- (arch=any-amd64 any-i386 powerpc ppc64 ppc64el s390x)mpfr_get_decimal64@Base 
4.0.0
+#MISSING: 4.0.1-1# (arch=any-amd64 any-i386 powerpc ppc64 ppc64el 
s390x)mpfr_get_decimal64@Base 4.0.0
  mpfr_get_default_prec@Base 3.1.3
  mpfr_get_default_rounding_mode@Base 3.1.3
  mpfr_get_emax@Base 3.1.3
@@ -442,7 +442,7 @@
  mpfr_set@Base 3.1.3
  mpfr_set_1_2@Base 4.0.0
  mpfr_set_d@Base 3.1.3
- (arch=any-amd64 any-i386 powerpc ppc64 ppc64el s390x)mpfr_set_decimal64@Base 
4.0.0
+#MISSING: 4.0.1-1# (arch=any-amd64 any-i386 powerpc ppc64 ppc64el 
s390x)mpfr_set_decimal64@Base 4.0.0
  mpfr_set_default_prec@Base 3.1.3
  mpfr_set_default_rounding_mode@Base 3.1.3
  mpfr_set_divby0@Base 3.1.3

and in the configure output:

checking if compiler knows _Decimal64... no

It should have been "yes", unless it is known that _Decimal64 does not
work on FreeBSD. But the GCC manual does not mention OS related issues
for _Decimal64:

  https://gcc.gnu.org/onlinedocs/gcc/Decimal-Float.html

-- 
Vincent Lefèvre  - Web: 
100% accessible validated (X)HTML - Blog: 
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

gcc-8_8.1.0-1_source.changes ACCEPTED into unstable

[Debian FTP Masters]

Accepted:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

Format: 1.8
Date: Wed, 02 May 2018 11:43:46 +0200
Source: gcc-8
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Architecture: source
Version: 8.1.0-1
Distribution: unstable
Urgency: medium
Maintainer: Debian GCC Maintainers 
Changed-By: Matthias Klose 
Description:
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  gcc-8_8.1.0.orig.tar.gz
  gcc-8_8.1.0-1.diff.gz
  gcc-8_8.1.0-1_source.buildinfo

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Bug#897416: mpfr4: FTBFS on kfreebsd-amd64

[Svante Signell]

Source: mpfr4
Version: 4.0.1-1
Severity: important
Tags: patch
User: debian-...@lists.debian.org
Usertags: kfreebsd

Hi,

mpfr4 FTBFS on kFreebsd-amd64 due to mismatches in the debian/libmpfr6.symbols
file. Attached is a file with the symbols generated from the build:
libmpfr6.symbols.kfreebsd-amd64.

Thanks!libmpfr.so.6 libmpfr6 #MINVER#
 __gmpfr_cache_const_catalan@Base 3.1.3
 __gmpfr_cache_const_euler@Base 3.1.3
 __gmpfr_cache_const_log2@Base 3.1.3
 __gmpfr_cache_const_pi@Base 3.1.3
 __gmpfr_ceil_exp2@Base 3.1.3
 __gmpfr_ceil_log2@Base 3.1.3
 __gmpfr_const_log2_RNDD@Base 4.0.0
 __gmpfr_const_log2_RNDU@Base 4.0.0
 __gmpfr_cuberoot@Base 3.1.3
 __gmpfr_default_fp_bit_precision@Base 3.1.3
 __gmpfr_default_rounding_mode@Base 3.1.3
 __gmpfr_emax@Base 3.1.3
 __gmpfr_emin@Base 3.1.3
 __gmpfr_flags@Base 3.1.3
 __gmpfr_floor_log2@Base 3.1.3
 __gmpfr_four@Base 3.1.3
 __gmpfr_fpif_export@Base 4.0.0
 __gmpfr_fpif_import@Base 4.0.0
 __gmpfr_fprintf@Base 3.1.3
 __gmpfr_inp_str@Base 3.1.3
 __gmpfr_int_ceil_log2@Base 3.1.3
 __gmpfr_isqrt@Base 3.1.3
 __gmpfr_l2b@Base 3.1.3
 __gmpfr_mone@Base 4.0.0
 __gmpfr_mpfr_get_sj@Base 3.1.3
 __gmpfr_mpfr_get_uj@Base 3.1.3
 __gmpfr_one@Base 3.1.3
 __gmpfr_out_str@Base 3.1.3
 __gmpfr_set_sj@Base 3.1.3
 __gmpfr_set_sj_2exp@Base 3.1.3
 __gmpfr_set_uj@Base 3.1.3
 __gmpfr_set_uj_2exp@Base 3.1.3
 __gmpfr_two@Base 3.1.3
 __gmpfr_vasprintf@Base 3.1.3
 __gmpfr_vfprintf@Base 3.1.3
 __gmpfr_vprintf@Base 3.1.3
 __gmpfr_vsnprintf@Base 3.1.3
 __gmpfr_vsprintf@Base 3.1.3
 mpfr_abort_prec_max@Base 3.1.3
 mpfr_abs@Base 3.1.3
 mpfr_acos@Base 3.1.3
 mpfr_acosh@Base 3.1.3
 mpfr_add1@Base 3.1.3
 mpfr_add1sp@Base 3.1.3
 mpfr_add@Base 3.1.3
 mpfr_add_d@Base 3.1.3
 mpfr_add_q@Base 3.1.3
 mpfr_add_si@Base 3.1.3
 mpfr_add_ui@Base 3.1.3
 mpfr_add_z@Base 3.1.3
 mpfr_agm@Base 3.1.3
 mpfr_ai@Base 3.1.3
 mpfr_allocate_func@Base 3.1.3
 mpfr_asin@Base 3.1.3
 mpfr_asinh@Base 3.1.3
 mpfr_asprintf@Base 3.1.3
 mpfr_assert_fail@Base 3.1.3
 mpfr_atan2@Base 3.1.3
 mpfr_atan@Base 3.1.3
 mpfr_atanh@Base 3.1.3
 mpfr_bases@Base 3.1.3
 mpfr_bernoulli_cache@Base 4.0.0
 mpfr_bernoulli_freecache@Base 4.0.0
 mpfr_beta@Base 4.0.0
 mpfr_buildopt_decimal_p@Base 3.1.3
 mpfr_buildopt_float128_p@Base 4.0.0
 mpfr_buildopt_gmpinternals_p@Base 3.1.3
 mpfr_buildopt_sharedcache_p@Base 4.0.0
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 mpfr_cache@Base 3.1.3
 mpfr_can_round@Base 3.1.3
 mpfr_can_round_raw@Base 3.1.3
 mpfr_cbrt@Base 3.1.3
 mpfr_ceil@Base 3.1.3
 mpfr_ceil_mul@Base 3.1.3
 mpfr_check@Base 3.1.3
 mpfr_check_range@Base 3.1.3
 mpfr_clear@Base 3.1.3
 mpfr_clear_cache@Base 3.1.3
 mpfr_clear_divby0@Base 3.1.3
 mpfr_clear_erangeflag@Base 3.1.3
 mpfr_clear_flags@Base 3.1.3
 mpfr_clear_inexflag@Base 3.1.3
 mpfr_clear_nanflag@Base 3.1.3
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 mpfr_clear_underflow@Base 3.1.3
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 mpfr_cmp2@Base 3.1.3
 mpfr_cmp3@Base 3.1.3
 mpfr_cmp@Base 3.1.3
 mpfr_cmp_d@Base 3.1.3
 mpfr_cmp_f@Base 3.1.3
 mpfr_cmp_ld@Base 3.1.3
 mpfr_cmp_q@Base 3.1.3
 mpfr_cmp_si@Base 3.1.3
 mpfr_cmp_si_2exp@Base 3.1.3
 mpfr_cmp_ui@Base 3.1.3
 mpfr_cmp_ui_2exp@Base 3.1.3
 mpfr_cmp_z@Base 3.1.3
 mpfr_cmpabs@Base 3.1.3
 mpfr_const_catalan@Base 3.1.3
 mpfr_const_catalan_internal@Base 3.1.3
 mpfr_const_euler@Base 3.1.3
 mpfr_const_euler_internal@Base 3.1.3
 mpfr_const_log2@Base 3.1.3
 mpfr_const_log2_internal@Base 3.1.3
 mpfr_const_pi@Base 3.1.3
 mpfr_const_pi_internal@Base 3.1.3
 mpfr_copysign@Base 3.1.3
 mpfr_cos@Base 3.1.3
 mpfr_cosh@Base 3.1.3
 mpfr_cot@Base 3.1.3
 mpfr_coth@Base 3.1.3
 mpfr_csc@Base 3.1.3
 mpfr_csch@Base 3.1.3
 mpfr_custom_get_exp@Base 3.1.3
 mpfr_custom_get_kind@Base 3.1.3
 mpfr_custom_get_significand@Base 3.1.3
 mpfr_custom_get_size@Base 3.1.3
 mpfr_custom_init@Base 3.1.3
 mpfr_custom_init_set@Base 3.1.3
 mpfr_custom_move@Base 3.1.3
 mpfr_d_div@Base 3.1.3
 mpfr_d_sub@Base 3.1.3
 mpfr_digamma@Base 3.1.3
 mpfr_dim@Base 3.1.3
 mpfr_div@Base 3.1.3
 mpfr_div_2exp@Base 3.1.3
 mpfr_div_2si@Base 3.1.3
 mpfr_div_2ui@Base 3.1.3
 mpfr_div_d@Base 3.1.3
 mpfr_div_q@Base 3.1.3
 mpfr_div_si@Base 3.1.3
 mpfr_div_ui2@Base 3.1.3
 mpfr_div_ui@Base 3.1.3
 mpfr_div_z@Base 3.1.3
 mpfr_divby0_p@Base 3.1.3
 mpfr_divhigh_n@Base 3.1.3
 mpfr_dump@Base 3.1.3
 mpfr_eint@Base 3.1.3
 mpfr_eq@Base 3.1.3
 mpfr_equal_p@Base 3.1.3
 mpfr_erandom@Base 4.0.0
 mpfr_erangeflag_p@Base 3.1.3
 mpfr_erf@Base 3.1.3
 mpfr_erfc@Base 3.1.3
 mpfr_exp10@Base 3.1.3
 mpfr_exp2@Base 3.1.3
 mpfr_exp@Base 3.1.3
 mpfr_exp_2@Base 3.1.3
 mpfr_exp_3@Base 3.1.3
 mpfr_expm1@Base 3.1.3
 mpfr_extract@Base 3.1.3
 mpfr_fac_ui@Base 3.1.3
 mpfr_fdump@Base 4.0.0
 mpfr_fits_intmax_p@Base 3.1.3
 mpfr_fits_sint_p@Base 3.1.3
 mpfr_fits_slong_p@Base 3.1.3
 mpfr_fits_sshort_p@Base 3.1.3
 mpfr_fits_uint_p@Base 3.1.3
 mpfr_fits_uintmax_p@Base 3.1.3
 mpfr_fits_ulong_p@Base 3.1.3
 mpfr_fits_ushort_p@Base 3.1.3
 mpfr_flags_clear@Base 4.0.0
 mpfr_flags_restore@Base 4.0.0
 mpfr_flags_save@Base 4.0.0
 mpfr_flags_set@Base 4.0.0
 mpfr_flags_test@Base 4.0.0