* [Bug middle-end/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
@ 2005-07-31 4:22 ` pinskia at gcc dot gnu dot org
2005-07-31 4:23 ` [Bug tree-optimization/23155] " dje at gcc dot gnu dot org
` (6 subsequent siblings)
7 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-31 4:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-31 04:21 -------
The front-end produces:
{.v=vec}.f[5] = n;
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|tree-optimization |middle-end
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2005-07-31 04:21:21
date| |
Summary|Gimplification failed for |[4.0/4.1 Regression]
|union cast |Gimplification failed for
| |union cast
Target Milestone|--- |4.0.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug tree-optimization/23155] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
2005-07-31 4:22 ` [Bug middle-end/23155] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
@ 2005-07-31 4:23 ` dje at gcc dot gnu dot org
2005-07-31 4:25 ` [Bug middle-end/23155] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
` (5 subsequent siblings)
7 siblings, 0 replies; 11+ messages in thread
From: dje at gcc dot gnu dot org @ 2005-07-31 4:23 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From dje at gcc dot gnu dot org 2005-07-31 04:21 -------
Sorry, there was a typo in the previous example. The correct example is:
typedef short __attribute__((vector_size (16))) v8hi;
union vx {short f[8]; v8hi v;};
extern void bar1(v8hi);
void
foo5 (v8hi vec, short n)
{
((union vx) vec).f[5] = n;
bar1 (vec);
}
and the output is:
$ ./xgcc -B./ -O0 -S a.c
gimplification failed:
{.v=vec} <constructor 0x426c1c00
type <union_type 0x426ba770 vx type_0 BLK
size <integer_cst 0x42611a60 constant invariant 128>
unit size <integer_cst 0x42611a80 constant invariant 16>
align 128 symtab 0 alias set -1
fields <field_decl 0x426ba8c0 f type <array_type 0x42694d20>
BLK file a.c line 2 size <integer_cst 0x42611a60 128> unit size
<integer_cst 0x42611a80 16>
align 16 offset_align 128
offset <integer_cst 0x42611400 constant invariant 0>
bit offset <integer_cst 0x42611e80 constant invariant 0> context
<union_type 0x426ba770 vx> chain <field_decl 0x426ba930 v>>
chain <type_decl 0x42620a00 D.1265>>
arg 0 <tree_list 0x426c1be0
purpose <field_decl 0x426ba930 v type <vector_type 0x426ba700 v8hi>
TI file a.c line 2 size <integer_cst 0x42611a60 128> unit size
<integer_cst 0x42611a80 16>
align 128 offset_align 128 offset <integer_cst 0x42611400 0> bit
offset <integer_cst 0x42611e80 0> context <union_type 0x426ba770 vx>>
value <parm_decl 0x426baa80 vec type <vector_type 0x426ba700 v8hi>
used TI file a.c line 7 size <integer_cst 0x42611a60 128> unit size
<integer_cst 0x42611a80 16>
align 128 context <function_decl 0x426bb800 foo5> initial
<vector_type 0x426ba700 v8hi> arg-type <vector_type 0x426ba700 v8hi> chain
<parm_decl 0x426baaf0 n>>>>
a.c: In function 'foo5':
a.c:9: internal compiler error: gimplification failed
--
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |tree-optimization
Summary|[4.0/4.1 Regression] |Gimplification failed for
|Gimplification failed for |union cast
|union cast |
Target Milestone|4.0.2 |---
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug middle-end/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
2005-07-31 4:22 ` [Bug middle-end/23155] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
2005-07-31 4:23 ` [Bug tree-optimization/23155] " dje at gcc dot gnu dot org
@ 2005-07-31 4:25 ` pinskia at gcc dot gnu dot org
2005-07-31 4:25 ` [Bug tree-optimization/23155] " pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-31 4:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-31 04:25 -------
If we give -pedantic-errors we reject it with an error but still ICE.
--
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |error-recovery, ice-on-
| |invalid-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug tree-optimization/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
` (2 preceding siblings ...)
2005-07-31 4:25 ` [Bug middle-end/23155] [4.0/4.1 Regression] " pinskia at gcc dot gnu dot org
@ 2005-07-31 4:25 ` pinskia at gcc dot gnu dot org
2005-08-04 9:20 ` [Bug c/23155] " rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-31 4:25 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-31 04:23 -------
Here is another testcase:
union vx {short f[8]; int v;};
int vec;
void
foo5 (int vec)
{
((union vx) vec).f[5] = 1;
}
--
What |Removed |Added
----------------------------------------------------------------------------
Summary|Gimplification failed for |[4.0/4.1 Regression]
|union cast |Gimplification failed for
| |union cast
Target Milestone|--- |4.0.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
` (3 preceding siblings ...)
2005-07-31 4:25 ` [Bug tree-optimization/23155] " pinskia at gcc dot gnu dot org
@ 2005-08-04 9:20 ` rguenth at gcc dot gnu dot org
2005-08-08 18:26 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2005-08-04 9:20 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 1056 bytes --]
------- Additional Comments From rguenth at gcc dot gnu dot org 2005-08-04 09:20 -------
It's an lvalue-cast, which we no longer support as an extension. So it's ICE on
invalid and a frontend bug. The C++ frontend spits out the interesting error
pr23155.c: In function void foo5(int):
pr23155.c:7: error: no matching function for call to vx::vx(int&)
pr23155.c:1: note: candidates are: vx::vx()
pr23155.c:1: note: vx::vx(const vx&)
The following get's rejected with what should be done with the original
testcase, too:
union vx {short f[8]; int v;};
int vec;
void bar(short *);
void
foo5 (int vec)
{
bar(((union vx) vec).f);
}
pr23155.c: In function foo5:
pr23155.c:10: error: invalid use of non-lvalue array
--
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |c
Keywords|ice-on-valid-code |accepts-invalid
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
` (4 preceding siblings ...)
2005-08-04 9:20 ` [Bug c/23155] " rguenth at gcc dot gnu dot org
@ 2005-08-08 18:26 ` pinskia at gcc dot gnu dot org
2005-09-16 20:22 ` janis at gcc dot gnu dot org
2005-09-27 16:00 ` mmitchel at gcc dot gnu dot org
7 siblings, 0 replies; 11+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-08-08 18:26 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-08-08 18:26 -------
: Search converges between 2004-06-20-trunk (#469) and 2004-06-22-trunk (#470).
Hmm, this was not introduced by the tree-ssa merge weird.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
` (5 preceding siblings ...)
2005-08-08 18:26 ` pinskia at gcc dot gnu dot org
@ 2005-09-16 20:22 ` janis at gcc dot gnu dot org
2005-09-27 16:00 ` mmitchel at gcc dot gnu dot org
7 siblings, 0 replies; 11+ messages in thread
From: janis at gcc dot gnu dot org @ 2005-09-16 20:22 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From janis at gcc dot gnu dot org 2005-09-16 20:22 -------
The testcase from comment #5 ICEs starting with this patch from kenner:
http://gcc.gnu.org/ml/gcc-cvs/2004-06/msg00881.html
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |kenner at gcc dot gnu dot
| |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c/23155] [4.0/4.1 Regression] Gimplification failed for union cast
2005-07-31 4:22 [Bug tree-optimization/23155] New: Gimplification failed for union cast dje at gcc dot gnu dot org
` (6 preceding siblings ...)
2005-09-16 20:22 ` janis at gcc dot gnu dot org
@ 2005-09-27 16:00 ` mmitchel at gcc dot gnu dot org
7 siblings, 0 replies; 11+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-09-27 16:00 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.0.2 |4.0.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23155
^ permalink raw reply [flat|nested] 11+ messages in thread