[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 Roman Zhuykov changed: What|Removed |Added CC||zhroma at gcc dot gnu.org --- Comment

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 Martin Liška changed: What|Removed |Added Status|NEW |RESOLVED Resolution|---

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #8 from Matthew Malcomson --- Author: matmal01 Date: Mon Dec 9 12:03:53 2019 New Revision: 279124 URL: https://gcc.gnu.org/viewcvs?rev=279124=gcc=rev Log: [mid-end] Add notes to dataflow insn info when re-emitting (PR92410) In

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #7 from Matthew Malcomson --- (In reply to Matthew Malcomson from comment #6) > I'm not sure whether there's any pre-existing "should not use dataflow > queries on notes" rule. If there is, then the >

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #6 from Matthew Malcomson --- I believe the problem is that `remove_notes` followed by `reemit_notes` can generate these notes with a different UID. When `reemit_notes` adds the new note, the dataflow information is not updated

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #5 from Matthew Malcomson --- I've had a little look into it, and the below seems promising: Based on a comment in haifa-sched.c, notes are removed before scheduling and added back in. Since the insn that is larger than the df

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #4 from Martin Liška --- Can be reproduced with a aarch64 cross compiler on x86-64-linux-gnu.

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 Martin Liška changed: What|Removed |Added CC||vmakarov at gcc dot gnu.org Known

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 --- Comment #2 from Martin Liška --- One can see it with the following patch: diff --git a/gcc/regstat.c b/gcc/regstat.c index 4da9b7cc523..c6cefb117d7 100644 --- a/gcc/regstat.c +++ b/gcc/regstat.c @@ -324,6 +324,7 @@

[Bug middle-end/92410] Invalid access to df->insns[] in regstat_bb_compute_calls_crossed (caught by hwasan)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410 Martin Liška changed: What|Removed |Added Keywords||needs-bisection