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Merge pull request #21113 from paldepind/cpp/range-analysis-float-ceil

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C++: Remove `safeFloor` in simple range analysis
This commit is contained in:
Simon Friis Vindum
2026-01-08 13:07:30 +01:00
committed by GitHub
parent 0c8fd833af 7c0054bf25
commit 26bd332617
9 changed files with 4899 additions and 4892 deletions
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8
cpp/ql/test/query-tests/Likely Bugs/Arithmetic/PointlessComparison/PointlessComparison.cpp
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@@ -38,8 +38,8 @@ int extreme_values(void)
if (x >> 1 >= 0x7FFFFFFFFFFFFFFF) {} // always true [NOT DETECTED]
if (x >> 1 >= 0xFFFFFFFFFFFFFFF) {} // always true [NOT DETECTED]
if (y >> 1 >= 0xFFFFFFFFFFFF) {} // always false [INCORRECT MESSAGE]
if (y >> 1 >= 0x800000000000) {} // always false [INCORRECT MESSAGE]
if (y >> 1 >= 0x7FFFFFFFFFFF) {} // always true [INCORRECT MESSAGE]
if (y >> 1 >= 0xFFFFFFFFFFF) {} // always true [INCORRECT MESSAGE]
if (y >> 1 >= 0xFFFFFFFFFFFF) {} // always false
if (y >> 1 >= 0x800000000000) {} // always false
if (y >> 1 >= 0x7FFFFFFFFFFF) {} // always true
if (y >> 1 >= 0xFFFFFFFFFFF) {} // always true
}

8
cpp/ql/test/query-tests/Likely Bugs/Arithmetic/PointlessComparison/PointlessComparison.expected
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@@ -45,9 +45,9 @@
| PointlessComparison.c:391:12:391:20 | ... < ... | Comparison is always false because ... * ... >= 6. |
| PointlessComparison.c:414:7:414:16 | ... == ... | Comparison is always false because ... * ... >= 18446744073709551616. |
| PointlessComparison.cpp:36:6:36:33 | ... >= ... | Comparison is always false because ... >> ... <= 9223372036854775808. |
| PointlessComparison.cpp:41:6:41:29 | ... >= ... | Comparison is always false because ... >> ... <= 140737488355327.5. |
| PointlessComparison.cpp:42:6:42:29 | ... >= ... | Comparison is always false because ... >> ... <= 140737488355327.5. |
| PointlessComparison.cpp:43:6:43:29 | ... >= ... | Comparison is always true because ... >> ... >= 140737488355327.5. |
| PointlessComparison.cpp:44:6:44:28 | ... >= ... | Comparison is always true because ... >> ... >= 140737488355327.5. |
| PointlessComparison.cpp:41:6:41:29 | ... >= ... | Comparison is always false because ... >> ... <= 140737488355327. |
| PointlessComparison.cpp:42:6:42:29 | ... >= ... | Comparison is always false because ... >> ... <= 140737488355327. |
| PointlessComparison.cpp:43:6:43:29 | ... >= ... | Comparison is always true because ... >> ... >= 140737488355327. |
| PointlessComparison.cpp:44:6:44:28 | ... >= ... | Comparison is always true because ... >> ... >= 140737488355327. |
| RegressionTests.cpp:57:7:57:22 | ... <= ... | Comparison is always true because * ... <= 4294967295. |
| Templates.cpp:9:10:9:24 | ... <= ... | Comparison is always true because local <= 32767. |