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* [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF
@ 2013-11-29 9:52 jan.smets@alcatel-lucent.com
2013-11-29 10:11 ` [Bug middle-end/59338] [4.9 Regression] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: jan.smets@alcatel-lucent.com @ 2013-11-29 9:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
Bug ID: 59338
Summary: error: position plus size exceeds size of referenced
object in BIT_FIELD_REF
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.smets@alcatel-lucent.com
minimal.i: In function 'test':
minimal.i:20:6: error: position plus size exceeds size of referenced object in
BIT_FIELD_REF
void test(void)
^
BIT_FIELD_REF <*qResp, 8, 32>
minimal.i:23:28: note: in statement
if (qResp->u.l[0].More == 0)
^
D.1802 = BIT_FIELD_REF <*qResp, 8, 32>;
minimal.i:20:6: internal compiler error: verify_gimple failed
void test(void)
^
typedef enum
{
XYZZY,
} enumType;
typedef struct
{
unsigned char More : 1;
} tResp;
typedef struct
{
enumType QueryType;
union
{
tResp l[0];
} u;
} tQResp;
void test(void)
{
tQResp *qResp = (0);
if (qResp->u.l[0].More == 0)
return;
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/59338] [4.9 Regression] error: position plus size exceeds size of referenced object in BIT_FIELD_REF
2013-11-29 9:52 [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF jan.smets@alcatel-lucent.com
@ 2013-11-29 10:11 ` rguenth at gcc dot gnu.org
2013-11-29 10:35 ` ebotcazou at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-11-29 10:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2013-11-29
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |4.9.0
Summary|error: position plus size |[4.9 Regression] error:
|exceeds size of referenced |position plus size exceeds
|object in BIT_FIELD_REF |size of referenced object
| |in BIT_FIELD_REF
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. I'll adjust the checking to be less conservative (trailing array
happening here and fold going nuts in creating BIT_FIELD_REFs).
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/59338] [4.9 Regression] error: position plus size exceeds size of referenced object in BIT_FIELD_REF
2013-11-29 9:52 [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF jan.smets@alcatel-lucent.com
2013-11-29 10:11 ` [Bug middle-end/59338] [4.9 Regression] " rguenth at gcc dot gnu.org
@ 2013-11-29 10:35 ` ebotcazou at gcc dot gnu.org
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: ebotcazou at gcc dot gnu.org @ 2013-11-29 10:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Confirmed. I'll adjust the checking to be less conservative (trailing array
> happening here and fold going nuts in creating BIT_FIELD_REFs).
I'm interested :-) but I don't know whether this will be sufficient for Ada.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/59338] [4.9 Regression] error: position plus size exceeds size of referenced object in BIT_FIELD_REF
2013-11-29 9:52 [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF jan.smets@alcatel-lucent.com
` (2 preceding siblings ...)
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
@ 2013-11-29 12:09 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-11-29 12:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/59338] [4.9 Regression] error: position plus size exceeds size of referenced object in BIT_FIELD_REF
2013-11-29 9:52 [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF jan.smets@alcatel-lucent.com
2013-11-29 10:11 ` [Bug middle-end/59338] [4.9 Regression] " rguenth at gcc dot gnu.org
2013-11-29 10:35 ` ebotcazou at gcc dot gnu.org
@ 2013-11-29 12:09 ` rguenth at gcc dot gnu.org
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-11-29 12:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov 29 12:09:12 2013
New Revision: 205521
URL: http://gcc.gnu.org/viewcvs?rev=205521&root=gcc&view=rev
Log:
2013-11-29 Richard Biener <rguenther@suse.de>
PR middle-end/59338
* tree-cfg.c (verify_expr): Restrict bounds verification of
BIT_FIELD_REF arguments to non-aggregate typed base objects.
* gcc.dg/torture/pr59338.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr59338.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-cfg.c
^ permalink raw reply [flat|nested] 5+ messages in thread
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2013-11-29 9:52 [Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF jan.smets@alcatel-lucent.com
2013-11-29 10:11 ` [Bug middle-end/59338] [4.9 Regression] " rguenth at gcc dot gnu.org
2013-11-29 10:35 ` ebotcazou at gcc dot gnu.org
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
2013-11-29 12:09 ` rguenth at gcc dot gnu.org
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