[Bug c/66345] New: internal compiler error: Segmentation fault -- raidctl.c 'do_meter'

[Bug c/66345] New: internal compiler error: Segmentation fault -- raidctl.c 'do_meter'

[drakain at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

            Bug ID: 66345
           Summary: internal compiler error: Segmentation fault --
                    raidctl.c 'do_meter'
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: drakain at gmail dot com
  Target Milestone: ---

When building rumpctrl https://github.com/rumpkernel/rumpctrl an internal
compiler error is encountered. Attached file shows output. My linux distro is
Arch Linux.vim 

Project build steps:

1. Clone repo
2. ./buildnb.sh

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc-5-20150519/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release --with-default-libstdcxx-abi=c++98
Thread model: posix
gcc version 5.1.0 (GCC) 


Note: the build is successful with clang 3.6.1

[Bug c/66345] internal compiler error: Segmentation fault -- raidctl.c 'do_meter'

[drakain at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

--- Comment #1 from Brian Graham <drakain at gmail dot com> ---
Created attachment 35654
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35654&action=edit
Truncated build output.

[Bug c/66345] internal compiler error: Segmentation fault -- raidctl.c 'do_meter'

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2015-05-30
                 CC|                            |trippels at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Please attach a preprocessed testcase as per http://gcc.gnu.org/bugs/.

[Bug c/66345] internal compiler error: Segmentation fault -- raidctl.c 'do_meter'

[drakain at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

--- Comment #3 from Brian Graham <drakain at gmail dot com> ---
Created attachment 35655
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35655&action=edit
Preprocessed file

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
          Component|c                           |middle-end
      Known to work|                            |4.8.4, 4.9.2
            Summary|internal compiler error:    |[5/6 Regression] internal
                   |Segmentation fault --       |compiler error:
                   |raidctl.c 'do_meter'        |Segmentation fault
      Known to fail|                            |5.0, 6.0

--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 tmp % cat raidctl.i
extern int snprintf(char *, unsigned long, const char *, ...);
const char a[] = "";
int b;
void
get_bar () { snprintf (0, 0, "%s", &a[b]); }

markus@x4 tmp % gcc -c -O2 raidctl.i
raidctl.i: In function ‘get_bar’:
raidctl.i:5:1: internal compiler error: tree check: expected integer_cst, have
negate_expr in decompose, at tree.h:4929
 get_bar () { snprintf (0, 0, "%s", &a[b]); }
 ^
0xd3447c tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../gcc/gcc/tree.c:9352
0x58db55 tree_check(tree_node const*, char const*, int, char const*, tree_code)
        ../../gcc/gcc/tree.h:3113
0x58db55 wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
        ../../gcc/gcc/tree.h:4929
0xd39d2a wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
        ../../gcc/gcc/tree.h:3060
0xd39d2a wide_int_ref_storage<false>::wide_int_ref_storage<tree_node
const*>(tree_node const* const&, unsigned int)
        ../../gcc/gcc/wide-int.h:957
0xd39d2a generic_wide_int<wide_int_ref_storage<false>
>::generic_wide_int<tree_node const*>(tree_node const* const&, unsigned int)
        ../../gcc/gcc/wide-int.h:733
0xd39d2a bool wi::eq_p<tree_node const*, int>(tree_node const* const&, int
const&)
        ../../gcc/gcc/wide-int.h:1715
0xd39d2a tree_int_cst_sgn(tree_node const*)
        ../../gcc/gcc/tree.c:7239
0xd3a95e compare_tree_int(tree_node const*, unsigned long)
        ../../gcc/gcc/tree.c:7448
0x85e27c gimple_fold_builtin_snprintf
        ../../gcc/gcc/gimple-fold.c:2543
0x85e27c gimple_fold_builtin
        ../../gcc/gcc/gimple-fold.c:2954
0x8604b0 gimple_fold_call
        ../../gcc/gcc/gimple-fold.c:3182
0x8604b0 fold_stmt_1
        ../../gcc/gcc/gimple-fold.c:3677
0xbf86b7 execute
        ../../gcc/gcc/tree-ssa-forwprop.c:2350
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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Subject: [Bug gcov-profile/66319] [6 Regression] gcov-tool.c:84:65: error: invalid conversion from 'int (*)(const c har*, const stat*, int, FTW*)' to 'int (*)(const char*, const stat*, int, FTW)'
Date: Sat, 30 May 2015 18:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf319

--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
_HPUX_SOURCE is predefined for c++.  This results in
_INCLUDE_XOPEN_SOURCE_EXTENDED being defined but _XOPEN_SOURCE_EXTENDED
is not predefined (see hunk in comment #1).  This behavior dates back
to this patch:
https://gcc.gnu.org/ml/gcc-patches/2005-05/msg00589.html

The HP-UX "ftw.h" header appears to be inconsistent in its use of the two
defines, but I don't know the history.

It seems _XOPEN_SOURCE and _XOPEN_SOURCE_EXTENDED need to be predefined
when _HPUX_SOURCE is predefined for consistency with current standards.

This will happen with current hpux compilers as long as flag_iso is not
set, so I think gnu++98 will work.

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenther at suse dot de
   Target Milestone|---                         |5.2

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
It was caused by r214574.

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |mpolacek at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |mpolacek at gcc dot gnu.org

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Testing a fix.

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Jun  2 09:13:29 2015
New Revision: 224016

URL: https://gcc.gnu.org/viewcvs?rev=224016&root=gcc&view=rev
Log:
        PR middle-end/66345
        * gimple-fold.c (gimple_fold_builtin_snprintf): Return false if
        get_maxval_strlen does not produce an INTEGER_CST.

        * gcc.dg/torture/pr66345.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr66345.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimple-fold.c
    trunk/gcc/testsuite/ChangeLog

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Jun  2 09:17:49 2015
New Revision: 224017

URL: https://gcc.gnu.org/viewcvs?rev=224017&root=gcc&view=rev
Log:
        PR middle-end/66345
        * gimple-fold.c (gimple_fold_builtin_snprintf): Return false if
        get_maxval_strlen does not produce an INTEGER_CST.

        * gcc.dg/torture/pr66345.c: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr66345.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/gimple-fold.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog

[Bug middle-end/66345] [5/6 Regression] internal compiler error: Segmentation fault

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66345

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.