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* [Bug c++/38795] [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates
2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
@ 2009-01-10 16:54 ` reichelt at gcc dot gnu dot org
2009-01-13 9:03 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2009-01-10 16:54 UTC (permalink / raw)
To: gcc-bugs
--
reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.3.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates
@ 2009-01-10 16:54 reichelt at gcc dot gnu dot org
2009-01-10 16:54 ` [Bug c++/38795] " reichelt at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2009-01-10 16:54 UTC (permalink / raw)
To: gcc-bugs
The following invalid code snippet is triggers an ICE since GCC 4.3.0:
========================================
template<typename... T> int foo(int i)
{
return *reinterpret_cast<T*>(i);
}
void bar(int i)
{
foo<int>(i);
}
========================================
bug.cc: In function 'int foo(int) [with T = int]':
bug.cc:8: instantiated from here
bug.cc:3: internal compiler error: tree check: expected record_type or
union_type or qual_union_type, have template_type_parm in lookup_conversions,
at cp/search.c:2459
Please submit a full bug report, [etc.]
It's a regression because the code crashes even without -std=gnu++0x.
--
Summary: [4.3/4.4 regression] ICE with reinterpret_cast and
variadic templates
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, monitored
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/38795] [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates
2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
2009-01-10 16:54 ` [Bug c++/38795] " reichelt at gcc dot gnu dot org
@ 2009-01-13 9:03 ` jakub at gcc dot gnu dot org
2009-01-13 18:12 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-01-13 9:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from jakub at gcc dot gnu dot org 2009-01-13 09:03 -------
Seems cp_walk_subtrees doesn't handle REINTERPRET_CAST_EXPR, so
check_for_bare_parameter_packs doesn't detect them. Just handling this the
same
as CAST_EXPR seems to fix this testcase.
--
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|UNCONFIRMED |ASSIGNED
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2009-01-13 09:03:19
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/38795] [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates
2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
2009-01-10 16:54 ` [Bug c++/38795] " reichelt at gcc dot gnu dot org
2009-01-13 9:03 ` jakub at gcc dot gnu dot org
@ 2009-01-13 18:12 ` jakub at gcc dot gnu dot org
2009-01-13 18:12 ` [Bug c++/38795] [4.3 " jakub at gcc dot gnu dot org
2009-01-15 16:13 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-01-13 18:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from jakub at gcc dot gnu dot org 2009-01-13 18:12 -------
Subject: Bug 38795
Author: jakub
Date: Tue Jan 13 18:11:50 2009
New Revision: 143351
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143351
Log:
PR c++/38795
* tree.c (cp_walk_subtrees): Handle REINTERPRET_CAST_EXPR,
STATIC_CAST_EXPR, CONST_CAST_EXPR and DYNAMIC_CAST_EXPR the same
as CAST_EXPR.
* g++.dg/cpp0x/pr38795.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr38795.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/tree.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/38795] [4.3 regression] ICE with reinterpret_cast and variadic templates
2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
` (2 preceding siblings ...)
2009-01-13 18:12 ` jakub at gcc dot gnu dot org
@ 2009-01-13 18:12 ` jakub at gcc dot gnu dot org
2009-01-15 16:13 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu dot org @ 2009-01-13 18:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2009-01-13 18:12 -------
Fixed on the trunk so far.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.3/4.4 regression] ICE |[4.3 regression] ICE with
|with reinterpret_cast and |reinterpret_cast and
|variadic templates |variadic templates
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/38795] [4.3 regression] ICE with reinterpret_cast and variadic templates
2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
` (3 preceding siblings ...)
2009-01-13 18:12 ` [Bug c++/38795] [4.3 " jakub at gcc dot gnu dot org
@ 2009-01-15 16:13 ` rguenth at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-01-15 16:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2009-01-15 16:12 -------
Fixed for GCC 4.4. Works for me on the branch with checking disabled.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Keywords| |ice-checking
Known to fail| |4.3.2
Known to work| |4.4.0
Resolution| |FIXED
Target Milestone|4.3.3 |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38795
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2009-01-15 16:13 UTC | newest]
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2009-01-10 16:54 [Bug c++/38795] New: [4.3/4.4 regression] ICE with reinterpret_cast and variadic templates reichelt at gcc dot gnu dot org
2009-01-10 16:54 ` [Bug c++/38795] " reichelt at gcc dot gnu dot org
2009-01-13 9:03 ` jakub at gcc dot gnu dot org
2009-01-13 18:12 ` jakub at gcc dot gnu dot org
2009-01-13 18:12 ` [Bug c++/38795] [4.3 " jakub at gcc dot gnu dot org
2009-01-15 16:13 ` rguenth at gcc dot gnu dot org
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