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Filter non-racing accesses of racing variable #550

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merged 3 commits into from
Jan 20, 2022
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@sim642 sim642 commented Jan 20, 2022

Previously, if we determined a variable to have racing accesses, then we printed all of its accesses. This is excessive since there might be accesses that don't race with any other.

This PR filters the accesses of a racing variable to only contain those that actually race with another access to it. This is now possible due to the pairwise may-race checking and avoids some spurious warnings.

@sim642 sim642 merged commit 814cd11 into master Jan 20, 2022
@sim642 sim642 deleted the filter-accesses branch January 20, 2022 14:15
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sim642 commented Jan 20, 2022

Umm... what?! Why did pushing a9e03d8 to filter-accesses merge this PR?
Also the branch didn't actually get deleted.

Whatever, if there's a problem with this, we can still discuss it here and fix it directly on master.

@michael-schwarz
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I was also surprised why you'd request a review and then merge it immediately 😉
But LGTM!

The only question is whether we may want to explicitly mention somewhere in the output that we only print accesses potentially involved in a race?

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sim642 commented Jan 20, 2022

I think it's fine not to, especially since the old behavior was more confusing: the race warning listed accesses that didn't actually race with anything and there was no mention of that.

Also, with allglobs everything still gets printed.

@sim642 sim642 added this to the v2.0.0 milestone Aug 12, 2022
sim642 added a commit to sim642/opam-repository that referenced this pull request Aug 18, 2022
CHANGES:

Goblint "lean" release after a lot of cleanup.

* Remove unmaintained analyses: OSEK, ARINC, shapes, containment, deadlocksByRaces (goblint/analyzer#460, goblint/analyzer#736, goblint/analyzer#812, goblint/analyzer#474).
* Add interactive analysis (goblint/analyzer#391).
* Add server mode (goblint/analyzer#522).
* Add Compilation Database support (goblint/analyzer#406, goblint/analyzer#448).
* Add floating point domain, unrolled array domain and improved struct domains (goblint/analyzer#734, goblint/analyzer#761, goblint/analyzer#577, goblint/analyzer#419).
* Add static loop unrolling and heap variable unrolling (goblint/analyzer#563, goblint/analyzer#722).
* Improve race detection with may-happen-in-parallel analysis (goblint/analyzer#529, goblint/analyzer#518, goblint/analyzer#595).
* Reimplement lockset and deadlock analyses (goblint/analyzer#659, goblint/analyzer#662, goblint/analyzer#650, goblint/analyzer#655).
* Add pthread extraction to Promela (goblint/analyzer#220).
* Add location spans to output (goblint/analyzer#428, goblint/analyzer#449).
* Improve race reporting (goblint/analyzer#550, goblint/analyzer#551).
* Improve dead code reporting (goblint/analyzer#94, goblint/analyzer#353, goblint/analyzer#785).
* Refactor warnings (goblint/analyzer#55, goblint/analyzer#783).
* Add JSON schema for configuration (goblint/analyzer#476, goblint/analyzer#499).
* Refactor option names (goblint/analyzer#28, goblint/analyzer#192, goblint/analyzer#516, goblint/analyzer#675).
* Add bash completion (goblint/analyzer#669).
* Add OCaml 4.13 and 4.14 support, remove OCaml 4.09 support (goblint/analyzer#503, goblint/analyzer#672).
sim642 added a commit to sim642/opam-repository that referenced this pull request Aug 18, 2022
CHANGES:

Goblint "lean" release after a lot of cleanup.

* Remove unmaintained analyses: OSEK, ARINC, shapes, containment, deadlocksByRaces (goblint/analyzer#460, goblint/analyzer#736, goblint/analyzer#812, goblint/analyzer#474).
* Add interactive analysis (goblint/analyzer#391).
* Add server mode (goblint/analyzer#522).
* Add Compilation Database support (goblint/analyzer#406, goblint/analyzer#448).
* Add floating point domain, unrolled array domain and improved struct domains (goblint/analyzer#734, goblint/analyzer#761, goblint/analyzer#577, goblint/analyzer#419).
* Add static loop unrolling and heap variable unrolling (goblint/analyzer#563, goblint/analyzer#722).
* Improve race detection with may-happen-in-parallel analysis (goblint/analyzer#529, goblint/analyzer#518, goblint/analyzer#595).
* Reimplement lockset and deadlock analyses (goblint/analyzer#659, goblint/analyzer#662, goblint/analyzer#650, goblint/analyzer#655).
* Add pthread extraction to Promela (goblint/analyzer#220).
* Add location spans to output (goblint/analyzer#428, goblint/analyzer#449).
* Improve race reporting (goblint/analyzer#550, goblint/analyzer#551).
* Improve dead code reporting (goblint/analyzer#94, goblint/analyzer#353, goblint/analyzer#785).
* Refactor warnings (goblint/analyzer#55, goblint/analyzer#783).
* Add JSON schema for configuration (goblint/analyzer#476, goblint/analyzer#499).
* Refactor option names (goblint/analyzer#28, goblint/analyzer#192, goblint/analyzer#516, goblint/analyzer#675).
* Add bash completion (goblint/analyzer#669).
* Add OCaml 4.13 and 4.14 support, remove OCaml 4.09 support (goblint/analyzer#503, goblint/analyzer#672).
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