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c3d0b1ff88
* Fix 24056 - const uninitialized data at module scope is not in TLS * Update tests * Add changelog entry
29 lines
745 B
Text
29 lines
745 B
Text
Global `const` variables can no longer be initialized from a non-shared static constructor
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Just like `immutable` data, global `const` data is not placed in Thread Local Storage (TLS), so initializing it in a thread-local static constructor allows you to violate `const`:
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see [issue 24056](https://issues.dlang.org/show_bug.cgi?id=24056) for details.
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Doing this will now result in a deprecation:
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---
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int x;
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const int y;
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immutable int z;
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static this()
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{
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x = 1;
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y = 2; // Deprecation: cannot modify const variable
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z = 3; // Error: cannot modify immutable variable (same as before)
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}
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---
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As a corrective action, move the initialization to a shared static constructor:
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---
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const int y;
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shared static this()
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{
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y = 4; // OK
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}
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---
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