| Bugfix | |
| * Fix failures of PSA multipart or interruptible operations when the | |
| library or the application is built with a compiler where | |
| "union foo x = {0}" does not initialize non-default members of the | |
| union, such as GCC 15 and some versions of Clang 18. This affected MAC | |
| multipart operations, MAC-based key derivation operations, interruptible | |
| signature, interruptible verification, and potentially other operations | |
| when using third-party drivers. This also affected one-shot MAC | |
| operations using the built-in implementation. Fixes #9814. | |
| * On entry to PSA driver entry points that set up a multipart operation | |
| ("xxx_setup"), the operation object is supposed to be all-bits-zero. | |
| This was sometimes not the case when an operation object is reused, | |
| or with compilers where "union foo x = {0}" does not initialize | |
| non-default members of the union. The PSA core now ensures that this | |
| guarantee is met in all cases. Fixes #9975. |