[Bug debug/45105] New: [4.6 Regression] -fcompare-debug failure at -Os

[Bug debug/45105] New: [4.6 Regression] -fcompare-debug failure at -Os

[zsojka at seznam dot cz]

Compiler output:
$ gcc -Os -fcompare-debug testcase.c
gcc: error: testcase.c: -fcompare-debug failure

Tested revisions:
r162618 - fail
r162456 - OK


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           Summary: [4.6 Regression] -fcompare-debug failure at -Os
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: zsojka at seznam dot cz
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[zsojka at seznam dot cz]

------- Comment #1 from zsojka at seznam dot cz  2010-07-28 10:41 -------
Created an attachment (id=21333)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21333&action=view)
reduced testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[jakub at gcc dot gnu dot org]

------- Comment #2 from jakub at gcc dot gnu dot org  2010-07-28 11:43 -------
Reproduced and works with -fno-var-tracking-assignments.  Looking into it.


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jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-28 11:43:45
               date|                            |
   Target Milestone|---                         |4.6.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2010-07-28 13:36 -------
Created an attachment (id=21337)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21337&action=view)
gcc46-pr45105-1.patch

Untested fix.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[jakub at gcc dot gnu dot org]

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jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jakub at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2010-07-28 11:43:45         |2010-07-28 14:12:18
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[mkuvyrkov at gcc dot gnu dot org]

------- Comment #4 from mkuvyrkov at gcc dot gnu dot org  2010-07-28 16:51 -------
*** Bug 45104 has been marked as a duplicate of this bug. ***


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mkuvyrkov at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dominiq at lps dot ens dot
                   |                            |fr


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2010-07-28 17:01 -------
Subject: Bug 45105

Author: jakub
Date: Wed Jul 28 17:01:05 2010
New Revision: 162647

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162647
Log:
        PR debug/45105
        * gcse.c (hoist_code): Use FOR_BB_INSNS macro.

        * gcc.dg/pr45105.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr45105.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gcse.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105

[Bug debug/45105] [4.6 Regression] -fcompare-debug failure at -Os

[jakub at gcc dot gnu dot org]

------- Comment #6 from jakub at gcc dot gnu dot org  2010-07-30 08:55 -------
Fixed.


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jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45105