Merge branch 'releases/gcc-12' into devel/omp/gcc-12

Merge up to r12-8784-g126e207199077e80c958ce0adfed443df1fe8f29 (23rd Sep 2022)

diff --cc gcc/c/c-typeck.cc
Simple merge

diff --cc gcc/cp/decl.cc
Simple merge

diff --cc gcc/cp/pt.cc
Simple merge

diff --cc gcc/fortran/trans-expr.cc
Simple merge

diff --cc gcc/testsuite/lib/target-supports.exp
Simple merge