Go 1.25 addresses a significant bug from Go 1.21 that previously allowed programs to execute without triggering nil pointer exceptions. One notable improvement ensures that code utilizing nil pointers now correctly causes a panic. Additionally, a new package has been introduced for testing concurrent code, allowing developers to execute test functions in a simulated environment where the timing is controlled. This package enhances reliability in testing concurrent behavior and was previously available under experimental status in Go 1.24.
The Go 1.25 release fixes a bug present in Go 1.21, ensuring nil pointer checks are timely and correct, preventing programs from executing successfully when they shouldn't.
A new package introduced in Go 1.25 supports testing for concurrent code by running tests in an isolated 'bubble' where time is virtualized.
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