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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 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 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 ` (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 --- 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
end of thread, other threads:[~2013-11-29 12:09 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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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