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Fix a bug in the bitwise encoding of float to int casting. #359

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Merged
merged 1 commit into from
Dec 19, 2016

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This affects cases when a floating-point number is cast to an integer
which is longer than the significand of the float and the exponent is
greater than the length of the significand. This includes
float -> (u)int32_t and double -> (u)int64_t. These were incorrectly
converted to 0.

@martin-cs martin-cs force-pushed the fix-cast-float-to-int branch from 3c4ee9b to e23b5ff Compare December 18, 2016 16:38
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Linting failures are all pre-existing and I didn't think fixing them would be appropriate in this patch.

@peterschrammel we need this for SV-COMP.
@kroening This is a long-standing bug.

@martin-cs martin-cs force-pushed the fix-cast-float-to-int branch from e23b5ff to 2186bcf Compare December 18, 2016 16:42
This affects cases when a floating-point number is cast to an integer
which is longer than the significand of the float and the exponent is
greater than the length of the significand.  This includes
float -> (u)int32_t and double -> (u)int64_t.  These were incorrectly
converted to 0.
@martin-cs martin-cs force-pushed the fix-cast-float-to-int branch from 2186bcf to 066829c Compare December 18, 2016 17:07
@kroening kroening merged commit 1029635 into diffblue:master Dec 19, 2016
smowton pushed a commit to smowton/cbmc that referenced this pull request May 9, 2018
67c80fc Merge pull request diffblue#394 from diffblue/jeannie/LinkedHashMapIterators
6667484 Tests that the iteration order is correct.
38301ea Tests other methods and constructor in LinkedHashMap
f795b3d Models other methods in LinkedHashMap.
25773a6 Tests entrySet(), keySet() and values() in LinkedHashMap
ee8cfad Models keySet(), entrySet() and values() in LinkedHashMap.
02c8271 Merge pull request diffblue#393 from diffblue/jeannie/UpdateReadMeForSpec
81460d3 Update readme.md to include new style for specs
9efcce3 Merge pull request diffblue#396 from diffblue/antonia/clean-up-for-TG-1081
c902c03 Merge pull request diffblue#397 from diffblue/jeannie/ForgotAppendObjectDocs
772a977 Merge pull request diffblue#390 from diffblue/antonia/enable-fixed-tests
5bef2ff Merge pull request diffblue#398 from diffblue/antonia/ticket-references-bugfix
ed1dca2 Merge pull request diffblue#395 from diffblue/allredj/disable-tests-failing-on-tg2717
c07841d Add more tests for String.getBytes(Charset)
d568e47 Fix array index bug in String.getBytesUTF_16
2218407 Model String.getBytes(Charset)
9c3a8bc Clarify difference of String.getBytes from JDK
cf1c23b Merge the two active scenarios in String.spec
dd5d2d9 Remove support_v1 tag from String specs
5f9a7e1 Split String tests into Level 0 and Level 1+
f2877b9 Enable Class test that was blocked by TG-1081
034f3e0 Remove reference to TG-1081 from File model
43afde7 Force static initialiser for File model
d95ff9e Remove reference to fixed bug from Date model
0807806 Remove references to fixed bugs from Arrays model
cde4085 Remove references to fixed bugs from HashMap model
d85fe5b Update RaceTimes references to TG-1404 and TG-1523
0e925e5 Update ticket number in HashMap.spec
03a5186 Enable TG-1404 tests
fa051dd Delete ArrayList CustomType test file
b0e853b Enable HashMap test previously blocked by TG-1877
44bfe0a Merge pull request diffblue#392 from diffblue/lajw/TG-2389-enable-tests
595dd5d Changes CProver helped methods in HashMap to protected.
c52771c Merge pull request diffblue#385 from diffblue/jeannie/UpdateTestRunner
de0abdc Enable tests fixed by recent test-gen fixes
b64357a Remove ticket numbers from resolved bugfix tests
53eca00 Documents StringBuilder and StringBuffer append(Object)
baec23f Merge pull request diffblue#389 from diffblue/antonia/enable-TG-2666-test
b2f0258 Enable LinkedList test that was blocked by TG-2666
57e79e5 Add knownbug tests for TG-2717
80fa433 Merge pull request diffblue#387 from diffblue/forejtv/unsupportedcharsetexception
990129c Merge pull request diffblue#391 from diffblue/allredj/disable-html-report
97f32f6 Don't write to the Html report
4cb5996 Merge pull request diffblue#382 from diffblue/antonia/address-ArrayList-todos
6749702 Merge pull request diffblue#386 from diffblue/antonia/gauge-telemetry-off
546dfdc Move legacy style tests into main Gauge step
5be886f Mark UnsupportedCharsetException as untested
1c17838 Add regression test for side effects
8c836ab Add tests for ArrayLists w. (non-default) capacity
34a141d Address bugfix TODOs in ArrayList
563b631 Correct bug description in comment
3e7603d Merge pull request diffblue#383 from diffblue/antonia/reformat-HashSet-tests
5d4e013 [TG-2751] Added UnsupportedCharsetException
11b28fb Reformat HashSet.spec
f77c3c4 Rename HashSet_L2.spec to HashSet_L0.spec
a16a1e7 Move all HashSet Maven tests into HashSet.spec
f21a2da Merge pull request diffblue#376 from diffblue/jeannie/LinkedHashMap
820c5f7 Merge pull request diffblue#380 from diffblue/jeannie/AppendObject
af65f4d Tests java.lang.StringBuffer append(Object)
a554517 Reformat tests in java.util.StringBuilder
dd6d3f6 Models append(Object) for StringBuilder and StringBuffer.
8920399 Tests toString() methods on existing models where possible
647f4fe Tests toString() methods on existing models where possible
978273b Documents and implements toString() methods in existing models.
78020ee Documents java.util.LinkedHashMap
fb0cf92 Tests java.util.LinkedHashMap
7a9df4e Models java.util.LinkedHashMap
5a8af60 Marks all methods as notModelled() for java.util.LinkedHashMap
8d6b149 Initial commit for java.util.LinkedHashMap
34b7c54 Merge pull request diffblue#359 from diffblue/forejtv/throwable-no-static
e2230de Cleanup of unused (mostly static) variables
255013e Merge pull request diffblue#384 from diffblue/jeannie/DisableBoundedGenericHashMap
f374d5f Merge pull request diffblue#381 from diffblue/justin/TG2600-Correction
ce6328b Turn off Gauge telemetry on Travis
6ab2864 Updates TestRunner.java to mimic platform parameters.
8ee75a4 Disables a HashMap test that depends on bounded generic type.
3677c3a [TG-2600] correct a mistake in the L1RemoveLast test
4511813 Merge pull request diffblue#378 from diffblue/antonia/LinkedList-first-model
6bda7ea Add tests for LinkedList
b5d4cbe Model LinkedList methods specified in TG-2600
aa6e90a Empty models for new classes
3c25555 Copy LinkedList and related classes from jdk
5e4d410 Merge pull request diffblue#373 from diffblue/romain/tests/activate-arrays-hashset-test#TG-1404
a0d9289 Activate some Arrays test
27d06b4 Activate tests for Hashset fixed by TG-1404
224962a Merge pull request diffblue#371 from diffblue/romain/tests/activate-after-fix-1404
ed26b28 Activate level 2 tests fixed by TG-1404
b59c1e9 Relabel known-bug for Level2 HashMap test
5c0041b Activate tests for HashMap.values fixed by TG-1404
2777872 Activate tests for HashMap.entrySet
50d3f2c Activate tests for HashMap.keySet fixed by TG-1404
6146215 Activate ArrayList test fixed by TG-1404
bc09fd7 Merge pull request diffblue#365 from diffblue/jeannie/getTimeZone
29cf7e0 Merge pull request diffblue#372 from diffblue/forejtv/bump-up-gauge-v
bdd500a Change Gauge Java Maven Plugin to 0.6.6
190aa18 Tests java.util.TimeZone
170a992 Documents java.util.TimeZone in javadocs
9e52664 Models java.util.TimeZone constructor, getID, setID and getTimeZone.
eac578e Tests sun.util.calendar.ZoneInfo
b4be728 Documents sun.util.calendar.ZoneInfo in javadocs
e5ffa98 Models the sun.util.calendar.ZoneInfo constructor and getTimeZone()
6d704ad Marks methods as notModelled() for sun.util.calendar.ZoneInfo
d249adb Marks methods as notModelled() for java.util.TimeZone
7f71d8d Initial commit for sun.util.calendar.ZoneInfo.
b53d9c1 Initial commit for java.util.TimeZone
056aad2 Merge pull request diffblue#368 from diffblue/allredj/fix-hashtable-spec
8848414 Merge pull request diffblue#370 from diffblue/allredj/stringbuffer-spec-small-correction
1d947e5 Small correction to StringBuffer spec file
42f1a93 Fix typo in hashtable spec file

git-subtree-dir: benchmarks/LIBRARIES/models
git-subtree-split: 67c80fcdcf82418b5e7099ae63dec3360b153f90
smowton pushed a commit to smowton/cbmc that referenced this pull request May 9, 2018
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2 participants