[Bug c++/95241] [10/11 Regression] internal compiler error: tree check: expected integer_cst, have range_expr in to_wide, at tree.h:5900

2020-05-29 Thread cvs-commit at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95241

--- Comment #2 from CVS Commits  ---
The master branch has been updated by Patrick Palka :

https://gcc.gnu.org/g:e069285cdf457cc85070e522380c4e25b0d2ed25

commit r11-722-ge069285cdf457cc85070e522380c4e25b0d2ed25
Author: Patrick Palka 
Date:   Fri May 29 09:44:09 2020 -0400

c++: constexpr ctor with RANGE_EXPR index [PR95241]

In the testcase below, the CONSTRUCTOR for 'field' contains a RANGE_EXPR
index:

  {{aggr_init_expr<...>, [1...2]={.off=1}}}

but get_or_insert_ctor_field isn't prepared to handle looking up a
RANGE_EXPR index.

This patch adds limited support to get_or_insert_ctor_field for looking
up a RANGE_EXPR index.  The limited scope of this patch should make it
more suitable for backporting, and more extensive support would be
needed only to handle self-modifying CONSTRUCTORs that contain a
RANGE_EXPR index, but I haven't yet been able to come up with a testcase
that actually creates such a CONSTRUCTOR.

gcc/cp/ChangeLog:

PR c++/95241
* constexpr.c (get_or_insert_ctor_field): Add limited support
for RANGE_EXPR index lookups.

gcc/testsuite/ChangeLog:

PR c++/95241
* g++.dg/cpp0x/constexpr-array25.C: New test.

[Bug c++/95241] [10/11 Regression] internal compiler error: tree check: expected integer_cst, have range_expr in to_wide, at tree.h:5900

2020-05-22 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95241

Richard Biener  changed:

   What|Removed |Added

   Priority|P3  |P2

[Bug c++/95241] [10/11 Regression] internal compiler error: tree check: expected integer_cst, have range_expr in to_wide, at tree.h:5900

2020-05-20 Thread ppalka at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95241

Patrick Palka  changed:

   What|Removed |Added

 Status|NEW |ASSIGNED
   Assignee|unassigned at gcc dot gnu.org  |ppalka at gcc dot 
gnu.org

[Bug c++/95241] [10/11 Regression] internal compiler error: tree check: expected integer_cst, have range_expr in to_wide, at tree.h:5900

2020-05-20 Thread mpolacek at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95241

Marek Polacek  changed:

   What|Removed |Added

 Ever confirmed|0   |1
   Target Milestone|--- |10.2
Summary|internal compiler error:|[10/11 Regression] internal
   |tree check: expected|compiler error: tree check:
   |integer_cst, have   |expected integer_cst, have
   |range_expr in to_wide, at   |range_expr in to_wide, at
   |tree.h:5900 |tree.h:5900
 Status|UNCONFIRMED |NEW
   Last reconfirmed||2020-05-20
 CC||mpolacek at gcc dot gnu.org,
   ||ppalka at gcc dot gnu.org
   Keywords||ice-on-valid-code

--- Comment #1 from Marek Polacek  ---
Confirmed, started with r10-7556-g37244b217a7329792f4ec48027f63cf5010b0ea8