PR tree-optimization/71625
* c-common.c (braced_list_to_string): New function.
* c-common.h (braced_list_to_string): Declare it.
gcc/cp/ChangeLog:
PR tree-optimization/71625
* decl.c (check_initializer): Call braced_list_to_string.
(eval_check_narrowing): New function.
* gcc/cp/typeck2.c (digest_init_r): Accept strings literals
as initilizers for all narrow character types.
gcc/testsuite/ChangeLog:
PR tree-optimization/71625
* g++.dg/init/string2.C: New test.
* g++.dg/init/string3.C: New test.
* g++.dg/init/string4.C: New test.
* gcc.dg/init-string-3.c: New test.
* gcc.dg/strlenopt-55.c: New test.
* gcc.dg/strlenopt-56.c: New test.