GCC version for RTEMS 6?

[Sebastian Huber]

Hello,

we have to select a GCC version for the RTEMS 6 release. Currently, GCC 
10 is used, however, with the release of GCC 10.4 this year it will 
reach its end of life. Other options are GCC 11 and 12. GCC 12 will be 
released in the next weeks. It has some nice features:

* Initialization of stack variables:

https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-ftrivial-auto-var-init

* Improved static analysis with -fanalyzer

* Improved gcov support, with the ability to back port changes from GCC 13:

https://gcc.gnu.org/pipermail/gcc-patches/2022-April/593536.html

* Upstream maintenance for the next three years

The draw back is that it is brand new.

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