Fix negative offset false positive on constant string #3784
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The bug report is about an error, the regression test should be in RuleTestCase. |
staabm
commented
Jan 16, 2025
| if ($offsetType instanceof ConstantIntegerType) { | ||
| if ($offsetType->getValue() < strlen($this->value)) { | ||
| if ($strLenType->isSuperTypeOf($offsetType)->yes()) { | ||
| return new self($this->value[$offsetType->getValue()]); |
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this change also fixes a php warning which could happen on too small negative offsets (covered by the tests)
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ondrejmirtes
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Jan 24, 2025
| @@ -366,7 +366,7 @@ public function isUppercaseString(): TrinaryLogic | |||
| public function hasOffsetValueType(Type $offsetType): TrinaryLogic | |||
| { | |||
| if ($offsetType->isInteger()->yes()) { | |||
| $strLenType = IntegerRangeType::fromInterval(0, strlen($this->value) - 1); | |||
| $strLenType = IntegerRangeType::fromInterval(-strlen($this->value), strlen($this->value) - 1); | |||
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You know you could ask for strlen() just once :)
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closes phpstan/phpstan#12122