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* [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
@ 2011-07-07 11:19 z0sh at sogetthis dot com
2011-07-07 11:27 ` [Bug c++/49669] [4.6/4.7 Regression] [C++0x] " redi at gcc dot gnu.org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: z0sh at sogetthis dot com @ 2011-07-07 11:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Summary: Compiler crashes with "internal compiler error: in
perform_member_init, at cp/init.c:530"
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: z0sh@sogetthis.com
Host: x86
Target: x86
Build: x86
Compile this with "g++ -c x.cpp -std=c++0x":
--- BEGIN FILE x.cpp ---
struct Foo { explicit Foo(int) { } };
struct Goo { Goo() : x(Foo(4), Foo(5)) { } Foo x[2]; };
--- END FILE ---
The compiler (GCC 4.6.0) crashes with this message:
x.cpp: In constructor ‘Goo::Goo()’:
x.cpp:2:38: internal compiler error: in perform_member_init, at cp/init.c:530
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
@ 2011-07-07 11:27 ` redi at gcc dot gnu.org
2011-07-07 11:50 ` z0sh at sogetthis dot com
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: redi at gcc dot gnu.org @ 2011-07-07 11:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.07.07 11:27:31
Known to work| |4.5.2
Summary|Compiler crashes with |[4.6/4.7 Regression]
|"internal compiler error: |[C++0x] Compiler crashes
|in perform_member_init, at |with "internal compiler
|cp/init.c:530" |error: in
| |perform_member_init, at
| |cp/init.c:530"
Ever Confirmed|0 |1
Known to fail| |4.6.1, 4.7.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-07 11:27:31 UTC ---
The code is invalid, to initialize the array you need:
x{Foo(4), Foo(5)}
4.5 correctly rejects it:
b.cc: In constructor 'Goo::Goo()':
b.cc:2:38: error: bad array initializer
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
2011-07-07 11:27 ` [Bug c++/49669] [4.6/4.7 Regression] [C++0x] " redi at gcc dot gnu.org
@ 2011-07-07 11:50 ` z0sh at sogetthis dot com
2011-07-07 12:13 ` redi at gcc dot gnu.org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: z0sh at sogetthis dot com @ 2011-07-07 11:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
--- Comment #2 from Kerrek SB <z0sh at sogetthis dot com> 2011-07-07 11:49:46 UTC ---
Yes, I know that the code is invalid, but that shouldn't make the compiler
crash, should it?
For that matter, your proposed correct syntax is also rejected by 4.6.0:
Goo::Goo() : x{Foo(4), Foo(5)} { }
"error: invalid initializer for array member ‘Foo Goo::x [2]"
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
2011-07-07 11:27 ` [Bug c++/49669] [4.6/4.7 Regression] [C++0x] " redi at gcc dot gnu.org
2011-07-07 11:50 ` z0sh at sogetthis dot com
@ 2011-07-07 12:13 ` redi at gcc dot gnu.org
2011-07-07 13:19 ` rguenth at gcc dot gnu.org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: redi at gcc dot gnu.org @ 2011-07-07 12:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-07 12:12:26 UTC ---
(In reply to comment #2)
> Yes, I know that the code is invalid, but that shouldn't make the compiler
> crash, should it?
No, that's why I confirmed the bug and marked it as a regression.
> For that matter, your proposed correct syntax is also rejected by 4.6.0:
>
> Goo::Goo() : x{Foo(4), Foo(5)} { }
>
> "error: invalid initializer for array member ‘Foo Goo::x [2]"
Yes, but it works with 4.6.1
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (2 preceding siblings ...)
2011-07-07 12:13 ` redi at gcc dot gnu.org
@ 2011-07-07 13:19 ` rguenth at gcc dot gnu.org
2011-07-07 16:10 ` z0sh at sogetthis dot com
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-07-07 13:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.6.2
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (3 preceding siblings ...)
2011-07-07 13:19 ` rguenth at gcc dot gnu.org
@ 2011-07-07 16:10 ` z0sh at sogetthis dot com
2011-07-07 16:40 ` redi at gcc dot gnu.org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: z0sh at sogetthis dot com @ 2011-07-07 16:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
--- Comment #4 from Kerrek SB <z0sh at sogetthis dot com> 2011-07-07 16:09:55 UTC ---
You're right, it works in 4.6.1 - thanks! (Just updated.)
Say, since you're here, if I change the definition of x from "Foo[2]" to
"std::array<Foo,2>", should I be allowed to initialize it with
Goo::Goo() : x{{Foo(4), Foo(5)}} { }
At the moment, _only_ the following seems to work:
Goo::Goo() : x({{Foo(4), Foo(5)}}) { }
In particular, initialization of "Foo[2]" and "std::array<Foo,2>" is anything
but "uniform" :-)
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (4 preceding siblings ...)
2011-07-07 16:10 ` z0sh at sogetthis dot com
@ 2011-07-07 16:40 ` redi at gcc dot gnu.org
2011-08-01 14:55 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: redi at gcc dot gnu.org @ 2011-07-07 16:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-07 16:39:56 UTC ---
(In reply to comment #4)
> Say, since you're here, if I change the definition of x from "Foo[2]" to
> "std::array<Foo,2>", should I be allowed to initialize it with
>
> Goo::Goo() : x{{Foo(4), Foo(5)}} { }
I think that should be valid
> At the moment, _only_ the following seems to work:
>
> Goo::Goo() : x({{Foo(4), Foo(5)}}) { }
Hmm, that creates a temporary array<Foo,2> and uses that to initialize x, I
don't think that should be necessary.
> In particular, initialization of "Foo[2]" and "std::array<Foo,2>" is anything
> but "uniform" :-)
It will never be completely uniform, because one is an array and one is an
aggregate containing an array, but I think any of these should be valid:
struct Foo { explicit Foo(int) { } };
struct TwoFoo { Foo elems[2]; };
TwoFoo x{ Foo(1), Foo(1) };
TwoFoo y{ { Foo(1), Foo(1) } };
TwoFoo z( { Foo(1), Foo(1) } ); // ?
struct Goo
{
Foo a[2];
TwoFoo x, y, z;
Goo()
: a{ Foo(1), Foo(2) }
, x{ Foo(1), Foo(2) }
, y{ { Foo(1), Foo(2) } }
, z( { Foo(1), Foo(2) } ) // ?
{ }
};
Jason, when you get around to looking at this ICE, could you comment on the
initialization question above? Thanks!
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (5 preceding siblings ...)
2011-07-07 16:40 ` redi at gcc dot gnu.org
@ 2011-08-01 14:55 ` rguenth at gcc dot gnu.org
2011-08-05 21:22 ` jason at gcc dot gnu.org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-08-01 14:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (6 preceding siblings ...)
2011-08-01 14:55 ` rguenth at gcc dot gnu.org
@ 2011-08-05 21:22 ` jason at gcc dot gnu.org
2011-08-06 4:37 ` jason at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jason at gcc dot gnu.org @ 2011-08-05 21:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |jason at gcc dot gnu.org
|gnu.org |
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> 2011-08-05 21:22:33 UTC ---
TwoFoo z( { Foo(1), Foo(1) } );
is not valid; you can't copy-list-initialize a TwoFoo from { Foo(1), Foo(1) }
because brace elision is not allowed in that context.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (7 preceding siblings ...)
2011-08-05 21:22 ` jason at gcc dot gnu.org
@ 2011-08-06 4:37 ` jason at gcc dot gnu.org
2011-08-06 4:39 ` jason at gcc dot gnu.org
2011-08-06 8:54 ` paolo.carlini at oracle dot com
10 siblings, 0 replies; 12+ messages in thread
From: jason at gcc dot gnu.org @ 2011-08-06 4:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> 2011-08-06 04:34:33 UTC ---
Author: jason
Date: Sat Aug 6 04:34:29 2011
New Revision: 177497
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177497
Log:
PR c++/49669
* init.c (perform_member_init): Handle invalid array initializer.
Added:
trunk/gcc/testsuite/g++.dg/init/array28.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (8 preceding siblings ...)
2011-08-06 4:37 ` jason at gcc dot gnu.org
@ 2011-08-06 4:39 ` jason at gcc dot gnu.org
2011-08-06 8:54 ` paolo.carlini at oracle dot com
10 siblings, 0 replies; 12+ messages in thread
From: jason at gcc dot gnu.org @ 2011-08-06 4:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> 2011-08-06 04:38:19 UTC ---
Author: jason
Date: Sat Aug 6 04:38:16 2011
New Revision: 177501
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177501
Log:
PR c++/49669
* init.c (perform_member_init): Handle invalid array initializer.
Added:
branches/gcc-4_6-branch/gcc/testsuite/g++.dg/init/array28.C
Modified:
branches/gcc-4_6-branch/gcc/cp/ChangeLog
branches/gcc-4_6-branch/gcc/cp/init.c
branches/gcc-4_6-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug c++/49669] [4.6/4.7 Regression] [C++0x] Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530"
2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
` (9 preceding siblings ...)
2011-08-06 4:39 ` jason at gcc dot gnu.org
@ 2011-08-06 8:54 ` paolo.carlini at oracle dot com
10 siblings, 0 replies; 12+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-08-06 8:54 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49669
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-08-06 08:54:17 UTC ---
Fixed for 4.6.2 and 4.7.0.
^ permalink raw reply [flat|nested] 12+ messages in thread
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2011-07-07 11:19 [Bug c++/49669] New: Compiler crashes with "internal compiler error: in perform_member_init, at cp/init.c:530" z0sh at sogetthis dot com
2011-07-07 11:27 ` [Bug c++/49669] [4.6/4.7 Regression] [C++0x] " redi at gcc dot gnu.org
2011-07-07 11:50 ` z0sh at sogetthis dot com
2011-07-07 12:13 ` redi at gcc dot gnu.org
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