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On 2004-08-04T15:34:17+00:00 Marcus Meissner wrote:

On AMD64, PPC, PPC64, i386: 
 
gcc -O3 -c parse_opts.i 
parse_opts.i: In function `f': 
parse_opts.i:11: internal compiler error: in gen_lowpart, at emit-rtl.c:1436 
 
The code is invalid (a bit), but it should not crash. 
 
reproduced with mainline from some days ago, 3.3-hammer branch, 3.4 branch 
too.

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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/0

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On 2004-08-04T15:34:49+00:00 Marcus Meissner wrote:

Created attachment 6881
parse_opts.i

compile with -O3 or -finline-functions

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/1

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On 2004-08-04T15:41:28+00:00 Pinskia wrote:

Confirmed, the code is undefined.  With the mainline we get a different ICE:
pr16876.c: In function `f':
pr16876.c:8: internal compiler error: in fold_convert, at fold-const.c:2000
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

But this is because of changes by me and other people.

Really this is a regression from 2.95.3 and 3.0.4 but that is because of the 
use of the RTL inliner with 
those versions instead of the tree inline.

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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/2

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On 2004-11-02T15:52:48+00:00 Pinskia wrote:

: Search converges between 2001-11-11-trunk (#45) and 2001-11-18-trunk
(#46).


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/3

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On 2005-02-22T10:49:48+00:00 Ubizjak wrote:

The problem in mainline is that 'tree type' of RECORD_TYPE enters fold_convert()
and triggers gcc_unreachable() in line 2003.

However Borland C++ exits with error: "Call to function 'g' with no prototype."
on line where g(0) is called.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/4

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On 2005-02-22T13:45:38+00:00 Pinskia wrote:

*** Bug 20141 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/5

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On 2005-03-29T14:04:30+00:00 Pinskia wrote:

*** Bug 20680 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/6

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On 2005-03-29T14:58:53+00:00 Jsm28 wrote:

See also my notes <http://gcc.gnu.org/ml/gcc-patches/2004-10/msg00772.html> on
what should receive warnings (possibly compiled into aborts), what should
receive errors and how c_convert_parm_for_inlining (a) is too late for such
diagnostics and (b) fails actually to carry out the conversion or diagnostics
in certain cases.


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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/7

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On 2005-10-05T11:59:57+00:00 Pinskia wrote:

*** Bug 24210 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/11

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On 2005-10-30T22:44:49+00:00 Mmitchel-gcc wrote:

P2 is the right setting for this bug; it's popping up often enough to
make it worth fixing.  Disabling the inlining in the case that the
argument type doesn't match (closely enough) the parameter type seems
reasonable to me, even without introducing a subsequent runtime abort.
That would be equivalent to the behavior if the function called appeared
in a different translation unit.

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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/12

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On 2005-12-18T17:15:16+00:00 stevenb wrote:

rth assigned this to himself: http://gcc.gnu.org/ml/gcc-
bugs/2005-11/msg02843.html

A progress report would be nice ;-)


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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/13

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On 2006-02-24T00:25:10+00:00 Mmitchel-gcc wrote:

This issue will not be resolved in GCC 4.1.0; retargeted at GCC 4.1.1.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/14

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On 2006-05-25T02:31:50+00:00 Mmitchel-gcc wrote:

Will not be fixed in 4.1.1; adjust target milestone to 4.1.2.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/15

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On 2006-06-05T10:41:30+00:00 stevenb wrote:

Unassigning rth, since he's obviously not actually interested in fixing
this.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/16

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On 2006-06-05T10:44:08+00:00 stevenb wrote:

The failures in 3.4 and later are in fold_const, so the gen_lowpart
problem is now avoided by, well, ICEing earlier :)

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/17

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On 2006-08-24T19:13:24+00:00 Amylaar wrote:

Created attachment 12130
patch

I think this should do the trick.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/18

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On 2006-08-25T18:52:07+00:00 Amylaar wrote:

Subject: Bug 16876

Author: amylaar
Date: Fri Aug 25 18:51:57 2006
New Revision: 116424

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116424
Log:
gcc:
        PR tree-optimization/16876
        * c-typeck.c (c_convert_parm_for_inlining): Don't take early
        exit if PARM doesn't match VALUE.

testsuite:
        gcc.dg/noncompile/pr16876.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/noncompile/pr16876.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-typeck.c
    trunk/gcc/testsuite/ChangeLog


Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/19

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On 2006-10-18T09:26:06+00:00 Rguenth wrote:

A backport of the patch bootstraps & regtests ok on the 4.1 branch, but
I'm unsure we want the side-effects of the rejects-valid, because this
is valid code according to jsm (only undefined at runtime).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/20

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On 2006-10-18T18:56:39+00:00 Pinskia wrote:

(In reply to comment #17)
> A backport of the patch bootstraps & regtests ok on the 4.1 branch.
Except it introduces PR 29478.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/21

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On 2007-06-23T18:18:10+00:00 Rguenth wrote:

Subject: Bug 16876

Author: rguenth
Date: Sat Jun 23 18:17:57 2007
New Revision: 125974

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125974
Log:
2007-06-23  Richard Guenther  <[email protected]>

        PR tree-optimization/16876
        PR middle-end/29478
        * tree.h (CALL_CANNOT_INLINE_P): New macro to access static_flag
        for CALL_EXPRs.
        * tree-inline.c (initialize_inlined_parameters): Do not call
        lang_hooks.tree_inlining.convert_parm_for_inlining.
        * cgraphbuild.c (initialize_inline_failed): Set inline failed
        reason for mismatched types.
        * gimplify.c (gimplify_call_expr): Verify the call expression
        arguments match the called function type signature.  Otherwise
        mark the call expression to be not considered for inlining
        using CALL_CANNOT_INLINE_P flag.
        * ipa-inline.c (cgraph_mark_inline): Honor CALL_CANNOT_INLINE_P on the
        edges call expression.
        (cgraph_decide_inlining_of_small_function): Likewise.
        (cgraph_decide_inlining): Likewise.
        * c-objc-common.h (LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING):
        Remove define.
        * c-tree.h (c_convert_parm_for_inlining): Remove declaration.
        * c-typeck.c (c_convert_parm_for_inlining): Remove.
        * langhooks-def.h (lhd_tree_inlining_convert_parm_for_inlining):
        Remove declaration.
        (LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING): Remove define.
        * langhooks.c (lhd_tree_inlining_convert_parm_for_inlining):
        Remove.
        * langhooks.h (struct lang_hooks_for_tree_inlining): Remove
        convert_parm_for_inlining member.

        * gcc.dg/pr29254.c: The warning is bogus.
        * gcc.dg/warn-1.c: Likewise.
        * gcc.dg/assign-warn-3.c: Likewise.
        * gcc.dg/noncompile/pr16876.c: The testcase is bogus, remove.

Removed:
    trunk/gcc/testsuite/gcc.dg/noncompile/pr16876.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-objc-common.h
    trunk/gcc/c-tree.h
    trunk/gcc/c-typeck.c
    trunk/gcc/cgraphbuild.c
    trunk/gcc/gimplify.c
    trunk/gcc/ipa-inline.c
    trunk/gcc/langhooks-def.h
    trunk/gcc/langhooks.c
    trunk/gcc/langhooks.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/assign-warn-3.c
    trunk/gcc/testsuite/gcc.dg/pr29254.c
    trunk/gcc/testsuite/gcc.dg/warn-1.c
    trunk/gcc/tree-inline.c
    trunk/gcc/tree.h


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On 2007-07-03T00:10:42+00:00 Reichelt wrote:

As the code is deemed valid, we still have a rejects-valid bug on the
4.2 branch.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/23

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On 2007-10-09T19:20:56+00:00 Mmitchel-gcc wrote:

Change target milestone to 4.2.3, as 4.2.2 has been released.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/24

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On 2008-02-01T16:52:36+00:00 Jsm28 wrote:

4.2.3 is being released now, changing milestones of open bugs to 4.2.4.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/26

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On 2008-05-19T20:22:31+00:00 Jsm28 wrote:

4.2.4 is being released, changing milestones to 4.2.5.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/27

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On 2008-07-04T22:44:52+00:00 Jsm28 wrote:

Closing 4.1 branch.


Reply at: 
https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/28

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On 2009-03-30T15:37:16+00:00 Jsm28 wrote:

Closing 4.2 branch.  Original bug was fixed for 4.2.0, rejects-valid
for 4.3.0.


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https://bugs.launchpad.net/ubuntu/+source/gcc-4.0/+bug/23231/comments/29

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  [PR16876, fixed in 4.2] gcc complains of internal error

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