Bug 223576

Summary:

internal compiler error: in copy_to_mode_reg, at explow.c:577

Product:

Red Hat Enterprise Linux 4

Reporter:

Sorav Bansal <bsorav>

Component:

gcc4

Assignee:

Jakub Jelinek <jakub>

Status:

CLOSED WONTFIX

QA Contact:

Severity:

medium

Docs Contact:

Priority:

medium

Version:

4.0

CC:

aoliva

Target Milestone:

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Target Release:

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Hardware:

All

OS:

Linux

Whiteboard:

Fixed In Version:

Doc Type:

Bug Fix

Doc Text:

Story Points:

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Clone Of:

Environment:

Last Closed:

2012-06-20 13:27:35 UTC

Type:

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Regression:

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Mount Type:

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Documentation:

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CRM:

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Category:

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oVirt Team:

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RHEL 7.3 requirements from Atomic Host:

Cloudforms Team:

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Target Upstream Version:

Embargoed:

Attachments:

Description	Flags
Preprocessed source emitted by gcc	none

Description Sorav Bansal 2007-01-20 02:38:33 UTC

Description of problem: internal compiler error: in copy_to_mode_reg, at
explow.c:577


Version-Release number of selected component (if applicable): 4.1.1 20070105


How reproducible:
Preprocessed source attached.

Steps to Reproduce:
1.Compile the preprocessed source
2.
3.
  
Actual results:
/export/u1/sbansal/SO/generator/i386.C: In member function âbool
instruction_386::is_logical_opcode(opcode_t)â:
/export/u1/sbansal/SO/generator/i386.C:5475: internal compiler error: in
copy_to_mode_reg, at explow.c:577


Expected results:
Should have compiled fine (compiles okay with older versions of gcc)


Additional info:

Comment 1 Sorav Bansal 2007-01-20 02:38:34 UTC

Created attachment 146052 [details]
Preprocessed source emitted by gcc

Comment 2 Jakub Jelinek 2007-01-20 19:30:26 UTC

Simplified testcase:
struct A
{
  int a:16;
  int b:8;
  bool operator==(A const x) const
  {
    return (this->a == x.a && this->b == x.b);
  }
};
const A c[] =
{
  {0x08, (0x3<<5)}, {0x09, (0x3<<5)},
  {0x0a, (0x3<<5)}, {0x0b, (0x3<<5)}
};
const int d = sizeof (c) / sizeof (A);

bool
foo (A const x)
{
  for (int i = 0; i < d; i++)
    if (c[i] == x)
      return true;
  return false;
}

Fails even with current FC6/RHEL5 4.1.1-RH GCC, doesn't fail with GCC trunk.

Comment 3 Alexandre Oliva 2007-02-13 01:57:35 UTC

Patch posted at http://gcc.gnu.org/ml/gcc-patches/2007-02/msg01126.html

Comment 4 Jiri Pallich 2012-06-20 13:27:35 UTC

Thank you for submitting this issue for consideration in Red Hat Enterprise Linux. The release for which you requested us to review is now End of Life. 
Please See https://access.redhat.com/support/policy/updates/errata/

If you would like Red Hat to re-consider your feature request for an active release, please re-open the request via appropriate support channels and provide additional supporting details about the importance of this issue.