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* [Bug c/66233] New: internal compiler error: in expand_fix, at optabs.c:5358
@ 2015-05-21  6:49 usignao at gmail dot com
  2015-05-21  8:39 ` [Bug tree-optimization/66233] [4.8/4.9/5/6 Regression] " jakub at gcc dot gnu.org
                   ` (12 more replies)
  0 siblings, 13 replies; 14+ messages in thread
From: usignao at gmail dot com @ 2015-05-21  6:49 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66233

            Bug ID: 66233
           Summary: internal compiler error: in expand_fix, at
                    optabs.c:5358
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: usignao at gmail dot com
  Target Milestone: ---

Hello! The error is produced by the following (invalid) code

/* oops.c */
unsigned int pData[5];
void f() {
        int i;
        for(i=0; i<5; i++) {
                pData[i] = (float) i;
        }
}

$ gcc -O3 -Wall -Wextra -o oops.o -c oops.c
oops.c: In function ‘f’:
oops.c:6:12: internal compiler error: in expand_fix, at optabs.c:5358
   pData[i] = (float) i;
            ^


No warnings are given. I'm on Linux x64, gcc version is 4.9.2, but according to
the godbolt.org all the versions from 4.8 up to 5.1.0 are also affected.
>From gcc-bugs-return-486874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 21 06:50:16 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/52952] Wformat location info is bad (wrong column number)
Date: Thu, 21 May 2015 06:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52952

--- Comment #38 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Author: manu
Date: Thu May 21 06:49:38 2015
New Revision: 223470

URL: https://gcc.gnu.org/viewcvs?rev=223470&root=gcc&view=rev
Log:
gcc/testsuite/ChangeLog:

2015-05-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

        PR c/52952
        * gcc.dg/redecl-4.c: Update column numbers.
        * gcc.dg/format/bitfld-1.c: Likewise.
        * gcc.dg/format/attr-2.c: Likewise.
        * gcc.dg/format/attr-6.c: Likewise.
        * gcc.dg/format/attr-7.c (baz): Likewise.
        * gcc.dg/format/asm_fprintf-1.c: Likewise.
        * gcc.dg/format/attr-4.c: Likewise.
        * gcc.dg/format/branch-1.c: Likewise.
        * gcc.dg/format/c90-printf-1.c: Likewise. Add tests for column
        locations within strings with embedded escape sequences.

gcc/c-family/ChangeLog:

2015-05-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>

        PR c/52952
        * c-format.c (location_column_from_byte_offset): New.
        (location_from_offset): New.
        (struct format_wanted_type): Add offset_loc field.
        (check_format_info): Move handling of location for extra arguments
        closer to the point of warning.
        (check_format_info_main): Pass the result of location_from_offset
        to warning_at.
        (format_type_warning): Pass the result of location_from_offset
        to warning_at.


Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-format.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/format/asm_fprintf-1.c
    trunk/gcc/testsuite/gcc.dg/format/attr-2.c
    trunk/gcc/testsuite/gcc.dg/format/attr-4.c
    trunk/gcc/testsuite/gcc.dg/format/attr-6.c
    trunk/gcc/testsuite/gcc.dg/format/attr-7.c
    trunk/gcc/testsuite/gcc.dg/format/bitfld-1.c
    trunk/gcc/testsuite/gcc.dg/format/branch-1.c
    trunk/gcc/testsuite/gcc.dg/format/c90-printf-1.c
    trunk/gcc/testsuite/gcc.dg/redecl-4.c
>From gcc-bugs-return-486875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu May 21 07:06:37 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/52952] Wformat location info is bad (wrong column number)
Date: Thu, 21 May 2015 07:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52952

--- Comment #39 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
A summary of what is still pending:

1. Handle macros

#define c               " %d "
  __builtin_printf(c, 0.5);

2. Handle non-contiguous strings:

  __builtin_printf(" %" "d ", 0.5);

3. Handle const arrays:

  const char a[] = " %d ";
  __builtin_printf(a, 0.5);


I have an idea on how to fix 1 and 2 but no idea how to fix 3.
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From: "ossman at cendio dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/61955] libsanitizer fails to compile on RHEL4
Date: Thu, 21 May 2015 07:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ida955

Pierre Ossman <ossman at cendio dot se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ossman at cendio dot se

--- Comment #4 from Pierre Ossman <ossman at cendio dot se> ---
Unfortunately the git history doesn't go further back than 2.6.12 so I don't
know when aio_abi.h got added. But the code only needs the enum, so something
like this should work:

#include <linux/version.h>
/* aio_abi.h was added in 2.6.10 (FIXME: check this) */
#if LINUX_VERSION_CODE < 132624
enum {
        IOCB_CMD_PREAD = 0,
        IOCB_CMD_PWRITE = 1,
        IOCB_CMD_FSYNC = 2,
        IOCB_CMD_FDSYNC = 3,
        IOCB_CMD_NOOP = 6,
};
#else
#include_next <linux/aio_abi.h>
#endif
/* IOCB_CMD_PREADV/PWRITEV has been added in 2.6.19 */
#if LINUX_VERSION_CODE < 132627
#define IOCB_CMD_PREADV 7
#define IOCB_CMD_PWRITEV 8
#endif


^ permalink raw reply	[flat|nested] 14+ messages in thread
end of thread, other threads:[~2015-06-18 14:06 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-05-21  6:49 [Bug c/66233] New: internal compiler error: in expand_fix, at optabs.c:5358 usignao at gmail dot com
2015-05-21  8:39 ` [Bug tree-optimization/66233] [4.8/4.9/5/6 Regression] " jakub at gcc dot gnu.org
2015-05-21  8:57 ` jakub at gcc dot gnu.org
2015-05-21  9:02 ` jakub at gcc dot gnu.org
2015-05-21 19:18 ` jakub at gcc dot gnu.org
2015-05-22  8:12 ` jakub at gcc dot gnu.org
2015-06-18 10:20 ` rguenth at gcc dot gnu.org
2015-06-18 10:21 ` [Bug tree-optimization/66233] [4.8/4.9 " rguenth at gcc dot gnu.org
2015-06-18 10:22 ` jakub at gcc dot gnu.org
2015-06-18 10:44 ` jakub at gcc dot gnu.org
2015-06-18 12:28 ` doko at gcc dot gnu.org
2015-06-18 14:04 ` jakub at gcc dot gnu.org
2015-06-18 14:06 ` jakub at gcc dot gnu.org
2015-06-18 14:06 ` jakub at gcc dot gnu.org

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