0.21.0

[Jeckerson]

Added

• Add two templates to structure bug reports and feature requests. #2525
• Added <self> method return-type annotation being emitted as a namespaced literal class name in arginfo #2505

Fixed

• Fixed PHP-stub generator emitting implicit-nullable parameters (Foo $x = null) that PHP 8.4 deprecates #2426
• Fixed false-positive possible-wrong-parameter warning when a string, bool, array, or callable argument was passed to a method parameter typed mixed #2512
• Fixed use statements registering aliases for non-existent classes silently #2435
• Fixed Unknown type: closure (and other AST-type-name) errors when a var declaration was given #2522
• Fixed segfault when for k, v in iterator(x) was given a non-Iterator operand (e.g. stdClass, plain array, scalar). #820
• Fixed --vernum CLI option silently falling through to the help screen instead of printing the numeric version. #2454
• Fixed silent generation of uncompilable C when a local var was re-declared with the same name as a method parameter. #2009
• Fixed string locals that were initialized to the empty string (string s = ""; or let s = "";) ending up as null at runtime when subsequent code paths did not reassign them. #2393
• Fixed new static() falling back to early binding. #2324
• Fixed ParseException::__construct() triggering a fatal PHP 8.4 deprecation (Implicitly marking parameter $previous as nullable) when a .zep file had a syntax error — the deprecation suppressed the actual parse-error message. Parameter is now declared as Exception | Throwable | null.
• Fixed isset() returning true for object properties and array offsets whose value is null. Previously the isset() operator emitted zephir_isset_property* / zephir_array_isset* kernel helpers that only performed key/property existence checks — equivalent to property_exists() / array_key_exists() — so isset(obj->p) where obj->p === null, isset(arr["k"]) where arr["k"] === null, and isset(obj->declaredButNeverAssigned) all returned true instead of PHP's false. The codegen now emits new zephir_isset_property_value* / zephir_array_isset_value* helpers that also reject IS_NULL; for objects this delegates to the has_property handler with ZEND_PROPERTY_ISSET (same path the engine uses for the ZEND_ISSET_ISEMPTY_PROP_OBJ opcode), so __isset magic and inaccessible/private property scoping behave correctly. The existing key-only helpers stay available for internal callers that genuinely want existence semantics (e.g. array_key_exists). #2385
• Forcing Exception on Failure of Compile Step

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This discussion was created from the release 0.21.0.