[Bug c++/42387] New: Getting internal compiler error.

[Bug c++/42387] New: Getting internal compiler error.

[parviz_fariborz at mentor dot com]

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Version :

cape1:/home/parvizf/tmp=> /tools/linux64/gcc-4.4.2/bin/gcc -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu

Compile command line output :

cape1:/home/parvizf/tmp/gcc_buf> /tools/linux64/gcc-4.4.2/bin/gcc -o test -Wall
-save-temps test.cc
test.cc: In constructor ‘AvlTreeIter<PF>::AvlTreeIter(const AvlTree<PF>*)’:
test.cc:48: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.


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           Summary: Getting internal compiler error.
           Product: gcc
           Version: 4.2.2
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: parviz_fariborz at mentor dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] Getting internal compiler error.

[parviz_fariborz at mentor dot com]

------- Comment #1 from parviz_fariborz at mentor dot com  2009-12-16 00:05 -------
Created an attachment (id=19315)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19315&action=view)
The output of -save-temps gcc switch


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4 / 4.5 Regression] Getting internal compiler error.

[paolo dot carlini at oracle dot com]

------- Comment #2 from paolo dot carlini at oracle dot com  2009-12-16 00:53 -------
Gosh, this is enough. The ICE disappears if AvlTreeIter isn't a template:

template<class PF>
struct AvlTreeIter
{
  int Num();

  AvlTreeIter()
  {
    new (void* [Num()]);
  }
};


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paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
      Known to fail|                            |4.4.1 4.4.2 4.5.0
      Known to work|                            |4.3.4
   Last reconfirmed|0000-00-00 00:00:00         |2009-12-16 00:53:43
               date|                            |
            Summary|Getting internal compiler   |[4.4 / 4.5 Regression]
                   |error.                      |Getting internal compiler
                   |                            |error.


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4 / 4.5 Regression] ICE with new expression in class template

[paolo dot carlini at oracle dot com]

------- Comment #3 from paolo dot carlini at oracle dot com  2009-12-16 01:10 -------
In mainline the ICE happens like this:

#0  0x00000000007613e0 in fold_convert_loc (loc=0, type=0x7ffff7e9f000,
arg=0x7ffff7e8d9f0) at ../../trunk/gcc/fold-const.c:2629
#1  0x000000000075aa5f in associate_trees (loc=0, t1=0x7ffff7e8d9f0,
t2=0x7ffff7e8a690, code=PLUS_EXPR, type=0x7ffff7e9f000) at
../../trunk/gcc/fold-const.c:1598
#2  0x00000000007aa3f0 in fold_binary_loc (loc=0, code=PLUS_EXPR,
type=0x7ffff7e9f000, op0=0x7ffff7fc10a8, op1=0x7ffff7e8a758) at
../../trunk/gcc/fold-const.c:10678
#3  0x00000000007e6b97 in fold_build2_stat_loc (loc=0, code=PLUS_EXPR,
type=0x7ffff7e9f000, op0=0x7ffff7fc10a8, op1=0x7ffff7e8a758) at
../../trunk/gcc/fold-const.c:14460
#4  0x00000000007a34e1 in fold_binary_loc (loc=0, code=PLUS_EXPR,
type=0x7ffff7e9f000, op0=0x7ffff7e8a758, op1=0x7ffff7fc10a8) at
../../trunk/gcc/fold-const.c:10095
#5  0x00000000007e6b97 in fold_build2_stat_loc (loc=0, code=PLUS_EXPR,
type=0x7ffff7e9f000, op0=0x7ffff7e8a758, op1=0x7ffff7fc10a8) at
../../trunk/gcc/fold-const.c:14460
#6  0x000000000075d6e1 in size_binop_loc (loc=0, code=PLUS_EXPR,
arg0=0x7ffff7e8a758, arg1=0x7ffff7fc10a8) at ../../trunk/gcc/fold-const.c:2183
#7  0x000000000093f329 in layout_type (type=0x7ffff5b38498) at
../../trunk/gcc/stor-layout.c:1975
#8  0x0000000000591b88 in complete_type (type=0x7ffff5b38498) at
../../trunk/gcc/cp/typeck.c:118
#9  0x0000000000591e69 in complete_type_or_else (type=0x0,
value=0x7ffff7e9f000) at ../../trunk/gcc/cp/typeck.c:142
#10 0x00000000005afc6a in build_new (placement=0x7fffffffd440,
type=0x7ffff5b38498, nelts=0x0, init=0x7fffffffd438, use_global_new=-135663616,
complain=3) at ../../trunk/gcc/cp/init.c:2389
#11 0x00000000005707c6 in cp_parser_new_expression (parser=0x7ffff5b37000) at
../../trunk/gcc/cp/parser.c:5783
...


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paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|major                       |normal
           Priority|P3                          |P2
            Summary|[4.4 / 4.5 Regression]      |[4.4 / 4.5 Regression] ICE
                   |Getting internal compiler   |with new expression in class
                   |error.                      |template


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4 / 4.5 Regression] ICE with new expression in class template

[jakub at gcc dot gnu dot org]

-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org
   Target Milestone|---                         |4.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4 / 4.5 Regression] ICE with new expression in class template

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2009-12-16 10:10 -------
Caused by PR28879 fix:
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=144988


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4 / 4.5 Regression] ICE with new expression in class template

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2009-12-16 10:44 -------
This exact spot of ICE can be fixed with e.g.:
--- init.c.jj 2009-12-02 09:37:36.000000000 +0100
+++ init.c 2009-12-16 11:32:52.000000000 +0100
@@ -2386,7 +2386,16 @@ build_new (VEC(tree,gc) **placement, tre
   /* The type allocated must be complete.  If the new-type-id was
      "T[N]" then we are just checking that "T" is complete here, but
      that is equivalent, since the value of "N" doesn't matter.  */
-  if (!complete_type_or_else (type, NULL_TREE))
+  if (processing_template_decl
+      && TREE_CODE (type) == ARRAY_TYPE
+      && TYPE_DOMAIN (type)
+      && TYPE_MAX_VALUE (TYPE_DOMAIN (type))
+      && TREE_SIDE_EFFECTS (TYPE_MAX_VALUE (TYPE_DOMAIN (type))))
+    {
+      if (!complete_type_or_else (TREE_TYPE (type), NULL_TREE))
+        return error_mark_node;
+    }
+  else if (!complete_type_or_else (type, NULL_TREE))
     return error_mark_node;

   rval = build_new_1 (placement, type, nelts, init, use_global_new, complain);

but then we ICE in array_type_nelts_top called from build_new_1.  So, either
when processing_template_decl and TYPE_MAX_VALUE of ARRAY_TYPE's TYPE_DOMAIN
has side-effects we just shouldn't call build_new_1, or build_new_1 will need
to be prepared for it.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4/4.5 Regression] ICE with new expression in class template

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2009-12-16 00:53:43         |2009-12-16 14:13:46
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4/4.5 Regression] ICE with new expression in class template

[jason at gcc dot gnu dot org]

------- Comment #6 from jason at gcc dot gnu dot org  2009-12-16 17:36 -------
Subject: Bug 42387

Author: jason
Date: Wed Dec 16 17:36:05 2009
New Revision: 155292

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155292
Log:
        PR c++/42387
        * decl.c (compute_array_index_type): Mark a VLA as dependent.

Added:
    trunk/gcc/testsuite/g++.dg/ext/vla8.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4/4.5 Regression] ICE with new expression in class template

[jason at gcc dot gnu dot org]

------- Comment #8 from jason at gcc dot gnu dot org  2009-12-16 18:03 -------
Fixed.


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jason at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387

[Bug c++/42387] [4.4/4.5 Regression] ICE with new expression in class template

[jason at gcc dot gnu dot org]

------- Comment #7 from jason at gcc dot gnu dot org  2009-12-16 18:02 -------
Subject: Bug 42387

Author: jason
Date: Wed Dec 16 18:02:38 2009
New Revision: 155293

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155293
Log:
        PR c++/42387
        * decl.c (compute_array_index_type): Mark a VLA as dependent.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/g++.dg/ext/vla8.C
Modified:
    branches/gcc-4_4-branch/gcc/cp/ChangeLog
    branches/gcc-4_4-branch/gcc/cp/decl.c
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42387