http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55174



--- Comment #3 from harper at msor dot vuw.ac.nz 2012-11-04 20:41:10 UTC ---

On Fri, 2 Nov 2012, janus at gcc dot gnu.org wrote:



> Date: Fri, 2 Nov 2012 10:54:50 +0000

> From: janus at gcc dot gnu.org <gcc-bugzi...@gcc.gnu.org>

> To: john.har...@vuw.ac.nz

> Subject: [Bug fortran/55174] [4.6 Regression] Segmentation fault with bad

>     array reference

> Resent-Date: Fri, 2 Nov 2012 10:55:07 +0000

> Resent-From: <john.har...@vuw.ac.nz>

> 

>

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55174

>

> janus at gcc dot gnu.org changed:

>

>           What    |Removed                     |Added

> ----------------------------------------------------------------------------

>           Keywords|                            |ice-on-invalid-code

>             Status|UNCONFIRMED                 |NEW

>   Last reconfirmed|                            |2012-11-02

>                 CC|                            |janus at gcc dot gnu.org

>            Summary|internal compiler error:    |[4.6 Regression]

>                   |Segmentation fault with bad |Segmentation fault with bad

>                   |array reference             |array reference

>     Ever Confirmed|0                           |1

>

> --- Comment #2 from janus at gcc dot gnu.org 2012-11-02 10:54:50 UTC ---

> (In reply to comment #1)

>> It looks like it has been fixed on trunk (aka 4.8.0).

>

> For me it also works with:

>

> gcc version 4.7.2 20120920 [gcc-4_7-branch revision 191568] (SUSE Linux)

>

> (while it fails with 4.7.0 and 4.6.0).

>

> Note: The 4.6 branch is still maintained, so we should consider fixing it

> there.

>

> -- 

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I have just tried gfortran 4.7.1 (x86_64-unknown-linux-gnu) and it

gave the internal compiler error with my program. So it seems that

4.7.0 and 4.7.1 both have the bug and 4.7.2 does not. Evidence:



miro[~]$ cat trybadstar.f90

implicit none

integer:: array(2)=(/42,666/)

print *, size(array(*))

end

miro[~]$ gf7 -v trybadstar.f90

Driving: /home/harperj1/gcc47/gf/bin/gfortran -v trybadstar.f90 -l 

gfortran -l m -shared-libgcc

Using built-in specs.

COLLECT_GCC=/home/harperj1/gcc47/gf/bin/gfortran

COLLECT_LTO_WRAPPER=/home/harperj1/gcc47/gf/libexec/gcc/x86_64-unknown-linux-gnu/4.7.1/lto-wrapper

Target: x86_64-unknown-linux-gnu

Configured with: /home/harperj1/gcc47/gcc-4.7.1/configure 

--prefix=/home/harperj1/gcc47/gf --enable-languages=c,fortran 

--disable-libada --with-local-prefix=/home/harperj1/gcc47 

--with-gmp=/home/harperj1/gcc47

Thread model: posix

gcc version 4.7.1 (GCC)

COLLECT_GCC_OPTIONS='-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'

  /home/harperj1/gcc47/gf/libexec/gcc/x86_64-unknown-linux-gnu/4.7.1/f951 

trybadstar.f90 -quiet -dumpbase trybadstar.f90 -mtune=generic 

-march=x86-64 -auxbase trybadstar -version -fintrinsic-modules-path 

/home/harperj1/gcc47/gf/lib/gcc/x86_64-unknown-linux-gnu/4.7.1/finclude -o 

/tmp/ccFXH0I1.s

GNU Fortran (GCC) version 4.7.1 (x86_64-unknown-linux-gnu)

         compiled by GNU C version 4.7.1, GMP version 4.3.1, MPFR version 

2.4.1, MPC version 0.8

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

GNU Fortran (GCC) version 4.7.1 (x86_64-unknown-linux-gnu)

         compiled by GNU C version 4.7.1, GMP version 4.3.1, MPFR version 

2.4.1, MPC version 0.8

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072

f951: internal compiler error: Segmentation fault

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.

miro[~]$



-- John Harper, School of Mathematics Statistics and Operations Research

Victoria University, PO Box 600, Wellington 6140, New Zealand

e-mail john.har...@vuw.ac.nz phone (+64)(4)463 5276 fax (+64)(4)463 5045

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