[Bug bootstrap/63695] New: [5 Regression] Bootstrapping with Ada is broken at r216942

[Bug bootstrap/63695] New: [5 Regression] Bootstrapping with Ada is broken at r216942

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

            Bug ID: 63695
           Summary: [5 Regression] Bootstrapping with Ada is broken at
                    r216942
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dominiq at lps dot ens.fr

On x86_64-apple-darwin14 bootstrapping with Ada is broken at r216942 (r216914
is OK):

g++ -c  -DIN_GCC_FRONTEND -g  -DIN_GCC    -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-format  -Wmissing-format-attribute -Woverloaded-virtual
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common 
-DHAVE_CONFIG_H -I. -Iada -I../../work/gcc -I../../work/gcc/ada
-I../../work/gcc/../include -I./../intl -I../../work/gcc/../libcpp/include
-I/opt/mp/include  -I../../work/gcc/../libdecnumber
-I../../work/gcc/../libdecnumber/dpd -I../libdecnumber
-I../../work/gcc/../libbacktrace -DCLOOG_INT_GMP  -DCLOOG_INT_GMP
-I/opt/mp/include  -o ada/targtyps.o -MT ada/targtyps.o -MMD -MP -MF
ada/.deps/targtyps.TPo ../../work/gcc/ada/gcc-interface/targtyps.c
gcc -c -g   -gnatpg -gnatwns -gnata -W -Wall -nostdinc -I- -I. -Iada/generated
-Iada -I../../work/gcc/ada -I../../work/gcc/ada/gcc-interface
../../work/gcc/ada/a-ioexce.ads -o ada/a-ioexce.o
a-ioexce.ads:21:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:22:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:23:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:24:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:25:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:26:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:27:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
a-ioexce.ads:28:19: violation of restriction "No_Elaboration_Code" at
system.ads:53
make[3]: *** [ada/a-ioexce.o] Error 1
make[3]: Leaving directory `/opt/gcc/build_w/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory `/opt/gcc/build_w'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/opt/gcc/build_w'
make: *** [all] Error 2

Note reaching this point requires the patches for pr63534 and pr63622.

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |charlet at gcc dot gnu.org
   Target Milestone|---                         |5.0

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[charlet at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

Arnaud Charlet <charlet at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2014-10-31
     Ever confirmed|0                           |1

--- Comment #1 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
Can you clarify the exact version of your bootstrap Ada compiler?
I suspect this is the issue here. Your bootstrap compiler is likely faulty
here (likely an old 4.10 snapshot?), and e.g. reverting to 4.9.x as your
bootstrap compiler should address this issue.

Arno

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Can you clarify the exact version of your bootstrap Ada compiler?
> I suspect this is the issue here. Your bootstrap compiler is likely faulty
> here (likely an old 4.10 snapshot?), and e.g. reverting to 4.9.x as your bootstrap
> compiler should address this issue.

I have bootstrapped gcc5 from r216098 up to r216914 with

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/gcc/gcc4.10a/libexec/gcc/x86_64-apple-darwin13.4.0/5.0.0/lto-wrapper
Target: x86_64-apple-darwin13.4.0    <--- maverick
Configured with: ../_clean/configure --prefix=/opt/gcc/gcc4.10a
--enable-languages=c,c++,fortran,ada,lto --with-gmp=/opt/mp --with-system-zlib
--enable-checking=release --with-isl=/opt/mp --enable-lto --enable-plugin
Thread model: posix
gcc version 5.0.0 20141010 (experimental) [trunk revision 216098] (GCC) 

I have successfully bootstrapped r216952 with

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/gcc/gcc4.9wr/libexec/gcc/x86_64-apple-darwin14.0.0/4.9.2/lto-wrapper
Target: x86_64-apple-darwin14.0.0    <--- yosemite
Configured with: ../4.9_work/configure --prefix=/opt/gcc/gcc4.9wr
--enable-languages=c,c++,fortran,objc,obj-c++,ada,java,lto --with-gmp=/opt/mp
--with-system-zlib --with-isl=/opt/mp --enable-lto --enable-plugin
Thread model: posix
gcc version 4.9.2 20141019 (prerelease) [4.9 branch revision 216436p1] (GCC)

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[charlet at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

Arnaud Charlet <charlet at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #3 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
OK, so this confirms my suspicion: you had an unsuitable snapshot as your
Ada bootstrap compiler.

Arno

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[charlet at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

--- Comment #5 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
The addition of pragma No_Elaboration_Code_All in system.ads, which wasn't
properly supported by your bootstrap compiler.

In order to bootstrap with this change you either need an older compiler which
doesn't know (and will ignore) about pragma No_Elaboration_Code_All, or knows
about it and handles it properly (case for very recent compilers, but not
yours).

Note that strictly speaking you should always use a stable release as your
bootstrap compiler, and not a snapshot, precisely to avoid this kind of
subtle temporary issues (which are very rare, but may occur).

Hope everything is now clear!

[Bug bootstrap/63695] [5 Regression] Bootstrapping with Ada is broken at r216942

[ebotcazou at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63695

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bernd.edlinger at hotmail dot de

--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
*** Bug 63720 has been marked as a duplicate of this bug. ***