public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug sanitizer/58413] New: ubsan constant folding @ 2013-09-13 9:46 jan.smets@alcatel-lucent.com 2013-09-13 9:55 ` [Bug sanitizer/58413] " mpolacek at gcc dot gnu.org ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: jan.smets@alcatel-lucent.com @ 2013-09-13 9:46 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 Bug ID: 58413 Summary: ubsan constant folding Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: jan.smets@alcatel-lucent.com CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org variable-sized object may not be initialized unsigned short x[128 >> 5] = {}; initializer element is not constant static int x = ((int)( 0x00000000 | ((31 & ((1 << (4)) - 1)) << (((15) + 6) + 4)) | ((0) << ((15) + 6)) | ((0) << (15)) ) ); (yes, auch) unexpected size of type 'long long unsigned int:40' uint64_t start_of_buffer = ((res.ptr.s.addr >> 7) - res.ptr.s.back) << 7; .addr and .back are bitfield members of struct s. ptr is a pointer to an union. case label does not reduce to an integer constant switch(int) ... case (1<<1): .. They all seem related. Thanks! ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com @ 2013-09-13 9:55 ` mpolacek at gcc dot gnu.org 2013-09-13 18:16 ` mpolacek at gcc dot gnu.org ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-13 9:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2013-09-13 CC| |mpolacek at gcc dot gnu.org Target Milestone|--- |4.9.0 Ever confirmed|0 |1 --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Mine. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com 2013-09-13 9:55 ` [Bug sanitizer/58413] " mpolacek at gcc dot gnu.org @ 2013-09-13 18:16 ` mpolacek at gcc dot gnu.org 2013-09-14 8:30 ` mpolacek at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-13 18:16 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 --- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> --- A patch that hopefully fixes the integer constant expression issues posted: http://gcc.gnu.org/ml/gcc-patches/2013-09/msg01057.html ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com 2013-09-13 9:55 ` [Bug sanitizer/58413] " mpolacek at gcc dot gnu.org 2013-09-13 18:16 ` mpolacek at gcc dot gnu.org @ 2013-09-14 8:30 ` mpolacek at gcc dot gnu.org 2013-09-16 16:00 ` mpolacek at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-14 8:30 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com ` (2 preceding siblings ...) 2013-09-14 8:30 ` mpolacek at gcc dot gnu.org @ 2013-09-16 16:00 ` mpolacek at gcc dot gnu.org 2013-09-25 8:59 ` mpolacek at gcc dot gnu.org 2013-09-25 9:00 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-16 16:00 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 --- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> --- A patch with the testcase for the bit-field issue has been posted: http://gcc.gnu.org/ml/gcc-patches/2013-09/msg01212.html ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com ` (3 preceding siblings ...) 2013-09-16 16:00 ` mpolacek at gcc dot gnu.org @ 2013-09-25 8:59 ` mpolacek at gcc dot gnu.org 2013-09-25 9:00 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-25 8:59 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Author: mpolacek Date: Wed Sep 25 08:58:57 2013 New Revision: 202886 URL: http://gcc.gnu.org/viewcvs?rev=202886&root=gcc&view=rev Log: PR sanitizer/58413 c-family/ * c-ubsan.c (ubsan_instrument_shift): Don't instrument an expression if we can prove it is correct. (ubsan_instrument_division): Likewise. Remove unnecessary check. testsuite/ * c-c++-common/ubsan/shift-5.c: New test. * c-c++-common/ubsan/shift-6.c: New test. * c-c++-common/ubsan/div-by-zero-5.c: New test. * gcc.dg/ubsan/c-shift-1.c: New test. Added: trunk/gcc/testsuite/c-c++-common/ubsan/div-by-zero-5.c trunk/gcc/testsuite/c-c++-common/ubsan/shift-5.c trunk/gcc/testsuite/c-c++-common/ubsan/shift-6.c trunk/gcc/testsuite/gcc.dg/ubsan/c-shift-1.c Modified: trunk/gcc/c-family/ChangeLog trunk/gcc/c-family/c-ubsan.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug sanitizer/58413] ubsan constant folding 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com ` (4 preceding siblings ...) 2013-09-25 8:59 ` mpolacek at gcc dot gnu.org @ 2013-09-25 9:00 ` mpolacek at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: mpolacek at gcc dot gnu.org @ 2013-09-25 9:00 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413 Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Should be fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-09-25 9:00 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-09-13 9:46 [Bug sanitizer/58413] New: ubsan constant folding jan.smets@alcatel-lucent.com 2013-09-13 9:55 ` [Bug sanitizer/58413] " mpolacek at gcc dot gnu.org 2013-09-13 18:16 ` mpolacek at gcc dot gnu.org 2013-09-14 8:30 ` mpolacek at gcc dot gnu.org 2013-09-16 16:00 ` mpolacek at gcc dot gnu.org 2013-09-25 8:59 ` mpolacek at gcc dot gnu.org 2013-09-25 9:00 ` mpolacek at gcc dot gnu.org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).