testsuite: Rename c2x-*, gnu2x-* tests to c23-*, gnu23-*

Completing the move to refer to C23 in place of C2X, rename all tests
with "c2x" or "gnu2x" in their names to use "c23" or "gnu23" instead.
17 files in the testsuite that referred to such tests (or, in one
case, a generated .i file to be scanned) by those names are updated
for the renaming.

Bootstrapped with no regressions for x86_64-pc-linux-gnu.

gcc/testsuite/
	* gcc.dg/atomic/c2x-stdatomic-lockfree-char8_t.c: Move to ...
	* gcc.dg/atomic/c23-stdatomic-lockfree-char8_t.c: ... here.
	* gcc.dg/atomic/c2x-stdatomic-var-init-1.c: Move to ...
	* gcc.dg/atomic/c23-stdatomic-var-init-1.c: ... here.
	* gcc.dg/atomic/gnu2x-stdatomic-lockfree-char8_t.c: Move to ...
	* gcc.dg/atomic/gnu23-stdatomic-lockfree-char8_t.c: ... here.
	Update reference to moved file.
	* gcc.dg/c2x-align-1.c: Move to ...
	* gcc.dg/c23-align-1.c: ... here.
	* gcc.dg/c2x-align-6.c: Move to ...
	* gcc.dg/c23-align-6.c: ... here.
	* gcc.dg/c2x-attr-deprecated-1.c: Move to ...
	* gcc.dg/c23-attr-deprecated-1.c: ... here.  Update reference to
	moved file.
	* gcc.dg/c2x-attr-deprecated-2.c: Move to ...
	* gcc.dg/c23-attr-deprecated-2.c: ... here.
	* gcc.dg/c2x-attr-deprecated-3.c: Move to ...
	* gcc.dg/c23-attr-deprecated-3.c: ... here.
	* gcc.dg/c2x-attr-deprecated-4.c: Move to ...
	* gcc.dg/c23-attr-deprecated-4.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-1.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-1.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-2.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-2.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-3.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-3.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-4.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-4.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-5.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-5.c: ... here.
	* gcc.dg/c2x-attr-fallthrough-6.c: Move to ...
	* gcc.dg/c23-attr-fallthrough-6.c: ... here.
	* gcc.dg/c2x-attr-maybe_unused-1.c: Move to ...
	* gcc.dg/c23-attr-maybe_unused-1.c: ... here.
	* gcc.dg/c2x-attr-maybe_unused-2.c: Move to ...
	* gcc.dg/c23-attr-maybe_unused-2.c: ... here.
	* gcc.dg/c2x-attr-maybe_unused-3.c: Move to ...
	* gcc.dg/c23-attr-maybe_unused-3.c: ... here.
	* gcc.dg/c2x-attr-maybe_unused-4.c: Move to ...
	* gcc.dg/c23-attr-maybe_unused-4.c: ... here.
	* gcc.dg/c2x-attr-nodiscard-1.c: Move to ...
	* gcc.dg/c23-attr-nodiscard-1.c: ... here.
	* gcc.dg/c2x-attr-nodiscard-2.c: Move to ...
	* gcc.dg/c23-attr-nodiscard-2.c: ... here.
	* gcc.dg/c2x-attr-nodiscard-3.c: Move to ...
	* gcc.dg/c23-attr-nodiscard-3.c: ... here.
	* gcc.dg/c2x-attr-nodiscard-4.c: Move to ...
	* gcc.dg/c23-attr-nodiscard-4.c: ... here.
	* gcc.dg/c2x-attr-noreturn-1.c: Move to ...
	* gcc.dg/c23-attr-noreturn-1.c: ... here.
	* gcc.dg/c2x-attr-noreturn-2.c: Move to ...
	* gcc.dg/c23-attr-noreturn-2.c: ... here.
	* gcc.dg/c2x-attr-noreturn-3.c: Move to ...
	* gcc.dg/c23-attr-noreturn-3.c: ... here.
	* gcc.dg/c2x-attr-syntax-1.c: Move to ...
	* gcc.dg/c23-attr-syntax-1.c: ... here.
	* gcc.dg/c2x-attr-syntax-2.c: Move to ...
	* gcc.dg/c23-attr-syntax-2.c: ... here.
	* gcc.dg/c2x-attr-syntax-3.c: Move to ...
	* gcc.dg/c23-attr-syntax-3.c: ... here.
	* gcc.dg/c2x-attr-syntax-4.c: Move to ...
	* gcc.dg/c23-attr-syntax-4.c: ... here.
	* gcc.dg/c2x-attr-syntax-5.c: Move to ...
	* gcc.dg/c23-attr-syntax-5.c: ... here.
	* gcc.dg/c2x-attr-syntax-6.c: Move to ...
	* gcc.dg/c23-attr-syntax-6.c: ... here.
	* gcc.dg/c2x-attr-syntax-7.c: Move to ...
	* gcc.dg/c23-attr-syntax-7.c: ... here.
	* gcc.dg/c2x-auto-1.c: Move to ...
	* gcc.dg/c23-auto-1.c: ... here.
	* gcc.dg/c2x-auto-2.c: Move to ...
	* gcc.dg/c23-auto-2.c: ... here.
	* gcc.dg/c2x-auto-3.c: Move to ...
	* gcc.dg/c23-auto-3.c: ... here.
	* gcc.dg/c2x-auto-4.c: Move to ...
	* gcc.dg/c23-auto-4.c: ... here.
	* gcc.dg/c2x-binary-constants-1.c: Move to ...
	* gcc.dg/c23-binary-constants-1.c: ... here.
	* gcc.dg/c2x-binary-constants-2.c: Move to ...
	* gcc.dg/c23-binary-constants-2.c: ... here.
	* gcc.dg/c2x-binary-constants-3.c: Move to ...
	* gcc.dg/c23-binary-constants-3.c: ... here.
	* gcc.dg/c2x-bool-1.c: Move to ...
	* gcc.dg/c23-bool-1.c: ... here.
	* gcc.dg/c2x-bool-2.c: Move to ...
	* gcc.dg/c23-bool-2.c: ... here.
	* gcc.dg/c2x-bool-limits-1.c: Move to ...
	* gcc.dg/c23-bool-limits-1.c: ... here.
	* gcc.dg/c2x-builtins-1.c: Move to ...
	* gcc.dg/c23-builtins-1.c: ... here.
	* gcc.dg/c2x-complit-1.c: Move to ...
	* gcc.dg/c23-complit-1.c: ... here.
	* gcc.dg/c2x-complit-2.c: Move to ...
	* gcc.dg/c23-complit-2.c: ... here.
	* gcc.dg/c2x-complit-3.c: Move to ...
	* gcc.dg/c23-complit-3.c: ... here.
	* gcc.dg/c2x-complit-4.c: Move to ...
	* gcc.dg/c23-complit-4.c: ... here.
	* gcc.dg/c2x-complit-5.c: Move to ...
	* gcc.dg/c23-complit-5.c: ... here.
	* gcc.dg/c2x-complit-6.c: Move to ...
	* gcc.dg/c23-complit-6.c: ... here.
	* gcc.dg/c2x-complit-7.c: Move to ...
	* gcc.dg/c23-complit-7.c: ... here.
	* gcc.dg/c2x-complit-8.c: Move to ...
	* gcc.dg/c23-complit-8.c: ... here.
	* gcc.dg/c2x-concat-1.c: Move to ...
	* gcc.dg/c23-concat-1.c: ... here.
	* gcc.dg/c2x-constexpr-1.c: Move to ...
	* gcc.dg/c23-constexpr-1.c: ... here.
	* gcc.dg/c2x-constexpr-2a.c: Move to ...
	* gcc.dg/c23-constexpr-2a.c: ... here.  Update reference to moved
	file.
	* gcc.dg/c2x-constexpr-2b.c: Move to ...
	* gcc.dg/c23-constexpr-2b.c: ... here.
	* gcc.dg/c2x-constexpr-3.c: Move to ...
	* gcc.dg/c23-constexpr-3.c: ... here.
	* gcc.dg/c2x-constexpr-4.c: Move to ...
	* gcc.dg/c23-constexpr-4.c: ... here.
	* gcc.dg/c2x-constexpr-5.c: Move to ...
	* gcc.dg/c23-constexpr-5.c: ... here.
	* gcc.dg/c2x-constexpr-6.c: Move to ...
	* gcc.dg/c23-constexpr-6.c: ... here.
	* gcc.dg/c2x-constexpr-7.c: Move to ...
	* gcc.dg/c23-constexpr-7.c: ... here.
	* gcc.dg/c2x-constexpr-8.c: Move to ...
	* gcc.dg/c23-constexpr-8.c: ... here.
	* gcc.dg/c2x-constexpr-9.c: Move to ...
	* gcc.dg/c23-constexpr-9.c: ... here.
	* gcc.dg/c2x-digit-separators-1.c: Move to ...
	* gcc.dg/c23-digit-separators-1.c: ... here.
	* gcc.dg/c2x-digit-separators-2.c: Move to ...
	* gcc.dg/c23-digit-separators-2.c: ... here.
	* gcc.dg/c2x-digit-separators-3.c: Move to ...
	* gcc.dg/c23-digit-separators-3.c: ... here.
	* gcc.dg/c2x-empty-init-1.c: Move to ...
	* gcc.dg/c23-empty-init-1.c: ... here.
	* gcc.dg/c2x-empty-init-2.c: Move to ...
	* gcc.dg/c23-empty-init-2.c: ... here.
	* gcc.dg/c2x-empty-init-3.c: Move to ...
	* gcc.dg/c23-empty-init-3.c: ... here.
	* gcc.dg/c2x-enum-1.c: Move to ...
	* gcc.dg/c23-enum-1.c: ... here.
	* gcc.dg/c2x-enum-2.c: Move to ...
	* gcc.dg/c23-enum-2.c: ... here.
	* gcc.dg/c2x-enum-3.c: Move to ...
	* gcc.dg/c23-enum-3.c: ... here.
	* gcc.dg/c2x-enum-4.c: Move to ...
	* gcc.dg/c23-enum-4.c: ... here.
	* gcc.dg/c2x-enum-5.c: Move to ...
	* gcc.dg/c23-enum-5.c: ... here.
	* gcc.dg/c2x-enum-6.c: Move to ...
	* gcc.dg/c23-enum-6.c: ... here.
	* gcc.dg/c2x-enum-7.c: Move to ...
	* gcc.dg/c23-enum-7.c: ... here.
	* gcc.dg/c2x-enum-8.c: Move to ...
	* gcc.dg/c23-enum-8.c: ... here.
	* gcc.dg/c2x-float-1.c: Move to ...
	* gcc.dg/c23-float-1.c: ... here.
	* gcc.dg/c2x-float-10.c: Move to ...
	* gcc.dg/c23-float-10.c: ... here.
	* gcc.dg/c2x-float-11.c: Move to ...
	* gcc.dg/c23-float-11.c: ... here.
	* gcc.dg/c2x-float-12.c: Move to ...
	* gcc.dg/c23-float-12.c: ... here.
	* gcc.dg/c2x-float-13.c: Move to ...
	* gcc.dg/c23-float-13.c: ... here.
	* gcc.dg/c2x-float-2.c: Move to ...
	* gcc.dg/c23-float-2.c: ... here.
	* gcc.dg/c2x-float-3.c: Move to ...
	* gcc.dg/c23-float-3.c: ... here.
	* gcc.dg/c2x-float-4.c: Move to ...
	* gcc.dg/c23-float-4.c: ... here.
	* gcc.dg/c2x-float-5.c: Move to ...
	* gcc.dg/c23-float-5.c: ... here.
	* gcc.dg/c2x-float-6.c: Move to ...
	* gcc.dg/c23-float-6.c: ... here.
	* gcc.dg/c2x-float-7a.c: Move to ...
	* gcc.dg/c23-float-7a.c: ... here.
	* gcc.dg/c2x-float-7b.c: Move to ...
	* gcc.dg/c23-float-7b.c: ... here.
	* gcc.dg/c2x-float-7c.c: Move to ...
	* gcc.dg/c23-float-7c.c: ... here.
	* gcc.dg/c2x-float-8.c: Move to ...
	* gcc.dg/c23-float-8.c: ... here.
	* gcc.dg/c2x-float-9.c: Move to ...
	* gcc.dg/c23-float-9.c: ... here.
	* gcc.dg/c2x-float-no-dfp-1.c: Move to ...
	* gcc.dg/c23-float-no-dfp-1.c: ... here.
	* gcc.dg/c2x-float-no-dfp-2.c: Move to ...
	* gcc.dg/c23-float-no-dfp-2.c: ... here.  Update reference to
	moved file.
	* gcc.dg/c2x-float-no-dfp-3.c: Move to ...
	* gcc.dg/c23-float-no-dfp-3.c: ... here.
	* gcc.dg/c2x-float-no-dfp-4.c: Move to ...
	* gcc.dg/c23-float-no-dfp-4.c: ... here.  Update reference to
	moved file.
	* gcc.dg/c2x-floatn-1.c: Move to ...
	* gcc.dg/c23-floatn-1.c: ... here.
	* gcc.dg/c2x-floatn-2.c: Move to ...
	* gcc.dg/c23-floatn-2.c: ... here.
	* gcc.dg/c2x-floatn-3.c: Move to ...
	* gcc.dg/c23-floatn-3.c: ... here.
	* gcc.dg/c2x-floatn-4.c: Move to ...
	* gcc.dg/c23-floatn-4.c: ... here.
	* gcc.dg/c2x-floatn-5.c: Move to ...
	* gcc.dg/c23-floatn-5.c: ... here.
	* gcc.dg/c2x-floatn-6.c: Move to ...
	* gcc.dg/c23-floatn-6.c: ... here.
	* gcc.dg/c2x-floatn-7.c: Move to ...
	* gcc.dg/c23-floatn-7.c: ... here.
	* gcc.dg/c2x-floatn-8.c: Move to ...
	* gcc.dg/c23-floatn-8.c: ... here.
	* gcc.dg/c2x-fordecl-1.c: Move to ...
	* gcc.dg/c23-fordecl-1.c: ... here.
	* gcc.dg/c2x-fordecl-2.c: Move to ...
	* gcc.dg/c23-fordecl-2.c: ... here.
	* gcc.dg/c2x-fordecl-3.c: Move to ...
	* gcc.dg/c23-fordecl-3.c: ... here.
	* gcc.dg/c2x-fordecl-4.c: Move to ...
	* gcc.dg/c23-fordecl-4.c: ... here.
	* gcc.dg/c2x-has-c-attribute-1.c: Move to ...
	* gcc.dg/c23-has-c-attribute-1.c: ... here.
	* gcc.dg/c2x-has-c-attribute-2.c: Move to ...
	* gcc.dg/c23-has-c-attribute-2.c: ... here.
	* gcc.dg/c2x-has-c-attribute-3.c: Move to ...
	* gcc.dg/c23-has-c-attribute-3.c: ... here.
	* gcc.dg/c2x-has-c-attribute-4.c: Move to ...
	* gcc.dg/c23-has-c-attribute-4.c: ... here.
	* gcc.dg/c2x-labels-1.c: Move to ...
	* gcc.dg/c23-labels-1.c: ... here.
	* gcc.dg/c2x-labels-2.c: Move to ...
	* gcc.dg/c23-labels-2.c: ... here.
	* gcc.dg/c2x-labels-3.c: Move to ...
	* gcc.dg/c23-labels-3.c: ... here.
	* gcc.dg/c2x-limits-1.c: Move to ...
	* gcc.dg/c23-limits-1.c: ... here.
	* gcc.dg/c2x-no-dfp-1.c: Move to ...
	* gcc.dg/c23-no-dfp-1.c: ... here.
	* gcc.dg/c2x-nullptr-1.c: Move to ...
	* gcc.dg/c23-nullptr-1.c: ... here.
	* gcc.dg/c2x-nullptr-2.c: Move to ...
	* gcc.dg/c23-nullptr-2.c: ... here.
	* gcc.dg/c2x-nullptr-3.c: Move to ...
	* gcc.dg/c23-nullptr-3.c: ... here.
	* gcc.dg/c2x-nullptr-4.c: Move to ...
	* gcc.dg/c23-nullptr-4.c: ... here.
	* gcc.dg/c2x-nullptr-5.c: Move to ...
	* gcc.dg/c23-nullptr-5.c: ... here.
	* gcc.dg/c2x-nullptr-6.c: Move to ...
	* gcc.dg/c23-nullptr-6.c: ... here.
	* gcc.dg/c2x-old-style-definition-1.c: Move to ...
	* gcc.dg/c23-old-style-definition-1.c: ... here.
	* gcc.dg/c2x-old-style-definition-2.c: Move to ...
	* gcc.dg/c23-old-style-definition-2.c: ... here.
	* gcc.dg/c2x-old-style-definition-3.c: Move to ...
	* gcc.dg/c23-old-style-definition-3.c: ... here.
	* gcc.dg/c2x-old-style-definition-4.c: Move to ...
	* gcc.dg/c23-old-style-definition-4.c: ... here.
	* gcc.dg/c2x-old-style-definition-5.c: Move to ...
	* gcc.dg/c23-old-style-definition-5.c: ... here.
	* gcc.dg/c2x-old-style-definition-6.c: Move to ...
	* gcc.dg/c23-old-style-definition-6.c: ... here.
	* gcc.dg/c2x-parm-omit-1.c: Move to ...
	* gcc.dg/c23-parm-omit-1.c: ... here.
	* gcc.dg/c2x-parm-omit-2.c: Move to ...
	* gcc.dg/c23-parm-omit-2.c: ... here.
	* gcc.dg/c2x-parm-omit-3.c: Move to ...
	* gcc.dg/c23-parm-omit-3.c: ... here.
	* gcc.dg/c2x-parm-omit-4.c: Move to ...
	* gcc.dg/c23-parm-omit-4.c: ... here.
	* gcc.dg/c2x-qual-1.c: Move to ...
	* gcc.dg/c23-qual-1.c: ... here.
	* gcc.dg/c2x-qual-2.c: Move to ...
	* gcc.dg/c23-qual-2.c: ... here.
	* gcc.dg/c2x-qual-3.c: Move to ...
	* gcc.dg/c23-qual-3.c: ... here.
	* gcc.dg/c2x-qual-4.c: Move to ...
	* gcc.dg/c23-qual-4.c: ... here.
	* gcc.dg/c2x-qual-5.c: Move to ...
	* gcc.dg/c23-qual-5.c: ... here.
	* gcc.dg/c2x-qual-6.c: Move to ...
	* gcc.dg/c23-qual-6.c: ... here.
	* gcc.dg/c2x-qual-7.c: Move to ...
	* gcc.dg/c23-qual-7.c: ... here.
	* gcc.dg/c2x-static-assert-1.c: Move to ...
	* gcc.dg/c23-static-assert-1.c: ... here.
	* gcc.dg/c2x-static-assert-2.c: Move to ...
	* gcc.dg/c23-static-assert-2.c: ... here.
	* gcc.dg/c2x-static-assert-3.c: Move to ...
	* gcc.dg/c23-static-assert-3.c: ... here.
	* gcc.dg/c2x-static-assert-4.c: Move to ...
	* gcc.dg/c23-static-assert-4.c: ... here.
	* gcc.dg/c2x-stdarg-1.c: Move to ...
	* gcc.dg/c23-stdarg-1.c: ... here.
	* gcc.dg/c2x-stdarg-2.c: Move to ...
	* gcc.dg/c23-stdarg-2.c: ... here.
	* gcc.dg/c2x-stdarg-3.c: Move to ...
	* gcc.dg/c23-stdarg-3.c: ... here.
	* gcc.dg/c2x-stdarg-4.c: Move to ...
	* gcc.dg/c23-stdarg-4.c: ... here.
	* gcc.dg/c2x-stdarg-5.c: Move to ...
	* gcc.dg/c23-stdarg-5.c: ... here.
	* gcc.dg/c2x-stdatomic-1.c: Move to ...
	* gcc.dg/c23-stdatomic-1.c: ... here.
	* gcc.dg/c2x-stddef-1.c: Move to ...
	* gcc.dg/c23-stddef-1.c: ... here.
	* gcc.dg/c2x-stdint-1.c: Move to ...
	* gcc.dg/c23-stdint-1.c: ... here.
	* gcc.dg/c2x-thread-local-1.c: Move to ...
	* gcc.dg/c23-thread-local-1.c: ... here.
	* gcc.dg/c2x-thread-local-2.c: Move to ...
	* gcc.dg/c23-thread-local-2.c: ... here.
	* gcc.dg/c2x-typeof-1.c: Move to ...
	* gcc.dg/c23-typeof-1.c: ... here.
	* gcc.dg/c2x-typeof-2.c: Move to ...
	* gcc.dg/c23-typeof-2.c: ... here.
	* gcc.dg/c2x-typeof-3.c: Move to ...
	* gcc.dg/c23-typeof-3.c: ... here.
	* gcc.dg/c2x-unproto-1.c: Move to ...
	* gcc.dg/c23-unproto-1.c: ... here.
	* gcc.dg/c2x-unproto-2.c: Move to ...
	* gcc.dg/c23-unproto-2.c: ... here.
	* gcc.dg/c2x-unproto-3.c: Move to ...
	* gcc.dg/c23-unproto-3.c: ... here.
	* gcc.dg/c2x-unproto-4.c: Move to ...
	* gcc.dg/c23-unproto-4.c: ... here.
	* gcc.dg/c2x-unreachable-1.c: Move to ...
	* gcc.dg/c23-unreachable-1.c: ... here.
	* gcc.dg/c2x-utf8char-1.c: Move to ...
	* gcc.dg/c23-utf8char-1.c: ... here.
	* gcc.dg/c2x-utf8char-2.c: Move to ...
	* gcc.dg/c23-utf8char-2.c: ... here.
	* gcc.dg/c2x-utf8char-3.c: Move to ...
	* gcc.dg/c23-utf8char-3.c: ... here.
	* gcc.dg/c2x-utf8str-type.c: Move to ...
	* gcc.dg/c23-utf8str-type.c: ... here.
	* gcc.dg/c2x-utf8str.c: Move to ...
	* gcc.dg/c23-utf8str.c: ... here.
	* gcc.dg/cpp/c2x-elifdef-1.c: Move to ...
	* gcc.dg/cpp/c23-elifdef-1.c: ... here.
	* gcc.dg/cpp/c2x-elifdef-2.c: Move to ...
	* gcc.dg/cpp/c23-elifdef-2.c: ... here.
	* gcc.dg/cpp/c2x-scope-1.c: Move to ...
	* gcc.dg/cpp/c23-scope-1.c: ... here.
	* gcc.dg/cpp/c2x-scope-2.c: Move to ...
	* gcc.dg/cpp/c23-scope-2.c: ... here.  Update reference to moved
	file.
	* gcc.dg/cpp/c2x-trigraphs-1.c: Move to ...
	* gcc.dg/cpp/c23-trigraphs-1.c: ... here.
	* gcc.dg/cpp/c2x-trigraphs-2.c: Move to ...
	* gcc.dg/cpp/c23-trigraphs-2.c: ... here.
	* gcc.dg/cpp/c2x-ucn-1.c: Move to ...
	* gcc.dg/cpp/c23-ucn-1.c: ... here.
	* gcc.dg/cpp/c2x-ucnid-1-utf8.c: Move to ...
	* gcc.dg/cpp/c23-ucnid-1-utf8.c: ... here.
	* gcc.dg/cpp/c2x-ucnid-1.c: Move to ...
	* gcc.dg/cpp/c23-ucnid-1.c: ... here.
	* gcc.dg/cpp/c2x-va-opt-1.c: Move to ...
	* gcc.dg/cpp/c23-va-opt-1.c: ... here.
	* gcc.dg/cpp/c2x-warning-1.c: Move to ...
	* gcc.dg/cpp/c23-warning-1.c: ... here.
	* gcc.dg/cpp/c2x-warning-2.c: Move to ...
	* gcc.dg/cpp/c23-warning-2.c: ... here.
	* gcc.dg/cpp/gnu2x-warning-1.c: Move to ...
	* gcc.dg/cpp/gnu23-warning-1.c: ... here.
	* gcc.dg/cpp/gnu2x-warning-2.c: Move to ...
	* gcc.dg/cpp/gnu23-warning-2.c: ... here.
	* gcc.dg/dfp/c2x-builtins-dfp-1.c: Move to ...
	* gcc.dg/dfp/c23-builtins-dfp-1.c: ... here.
	* gcc.dg/dfp/c2x-constants-1.c: Move to ...
	* gcc.dg/dfp/c23-constants-1.c: ... here.
	* gcc.dg/dfp/c2x-constants-2.c: Move to ...
	* gcc.dg/dfp/c23-constants-2.c: ... here.
	* gcc.dg/dfp/c2x-constexpr-dfp-1.c: Move to ...
	* gcc.dg/dfp/c23-constexpr-dfp-1.c: ... here.
	* gcc.dg/dfp/c2x-constexpr-dfp-2.c: Move to ...
	* gcc.dg/dfp/c23-constexpr-dfp-2.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-1.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-1.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-2.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-2.c: ... here.  Update reference to
	moved file.
	* gcc.dg/dfp/c2x-float-dfp-3.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-3.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-4.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-4.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-5.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-5.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-6.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-6.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-7.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-7.c: ... here.
	* gcc.dg/dfp/c2x-float-dfp-8.c: Move to ...
	* gcc.dg/dfp/c23-float-dfp-8.c: ... here.
	* gcc.dg/dfp/c2x-keywords-1.c: Move to ...
	* gcc.dg/dfp/c23-keywords-1.c: ... here.
	* gcc.dg/dfp/c2x-keywords-2.c: Move to ...
	* gcc.dg/dfp/c23-keywords-2.c: ... here.
	* gcc.dg/format/c2x-dfp-printf-1.c: Move to ...
	* gcc.dg/format/c23-dfp-printf-1.c: ... here.
	* gcc.dg/format/c2x-dfp-scanf-1.c: Move to ...
	* gcc.dg/format/c23-dfp-scanf-1.c: ... here.
	* gcc.dg/format/c2x-printf-1.c: Move to ...
	* gcc.dg/format/c23-printf-1.c: ... here.
	* gcc.dg/format/c2x-scanf-1.c: Move to ...
	* gcc.dg/format/c23-scanf-1.c: ... here.
	* gcc.dg/format/c2x-strftime-1.c: Move to ...
	* gcc.dg/format/c23-strftime-1.c: ... here.
	* gcc.dg/gnu2x-attr-syntax-1.c: Move to ...
	* gcc.dg/gnu23-attr-syntax-1.c: ... here.
	* gcc.dg/gnu2x-attr-syntax-2.c: Move to ...
	* gcc.dg/gnu23-attr-syntax-2.c: ... here.
	* gcc.dg/gnu2x-attrs-1.c: Move to ...
	* gcc.dg/gnu23-attrs-1.c: ... here.
	* gcc.dg/gnu2x-attrs-2.c: Move to ...
	* gcc.dg/gnu23-attrs-2.c: ... here.
	* gcc.dg/gnu2x-auto-1.c: Move to ...
	* gcc.dg/gnu23-auto-1.c: ... here.
	* gcc.dg/gnu2x-builtins-no-dfp-1.c: Move to ...
	* gcc.dg/gnu23-builtins-no-dfp-1.c: ... here.
	* gcc.dg/gnu2x-complit-1.c: Move to ...
	* gcc.dg/gnu23-complit-1.c: ... here.
	* gcc.dg/gnu2x-complit-2.c: Move to ...
	* gcc.dg/gnu23-complit-2.c: ... here.
	* gcc.dg/gnu2x-constexpr-1.c: Move to ...
	* gcc.dg/gnu23-constexpr-1.c: ... here.
	* gcc.dg/gnu2x-empty-init-1.c: Move to ...
	* gcc.dg/gnu23-empty-init-1.c: ... here.
	* gcc.dg/gnu2x-empty-init-2.c: Move to ...
	* gcc.dg/gnu23-empty-init-2.c: ... here.
	* gcc.dg/gnu2x-enum-1.c: Move to ...
	* gcc.dg/gnu23-enum-1.c: ... here.
	* gcc.dg/gnu2x-static-assert-1.c: Move to ...
	* gcc.dg/gnu23-static-assert-1.c: ... here.
	* gcc.dg/gnu2x-stdarg-1.c: Move to ...
	* gcc.dg/gnu23-stdarg-1.c: ... here.
	* gcc.dg/gnu2x-typeof-1.c: Move to ...
	* gcc.dg/gnu23-typeof-1.c: ... here.
	* gcc.dg/gnu2x-utf8char-1.c: Move to ...
	* gcc.dg/gnu23-utf8char-1.c: ... here.  Update reference to moved
	file.
	* gcc.dg/gnu2x-utf8str-type.c: Move to ...
	* gcc.dg/gnu23-utf8str-type.c: ... here.  Update reference to
	moved file.
	* gcc.dg/gnu2x-utf8str.c: Move to ...
	* gcc.dg/gnu23-utf8str.c: ... here.
	* gcc.dg/torture/builtin-fp-int-inexact-c2x.c: Move to ...
	* gcc.dg/torture/builtin-fp-int-inexact-c23.c: ... here.
	* gcc.dg/torture/c2x-stdarg-split-1a.c: Move to ...
	* gcc.dg/torture/c23-stdarg-split-1a.c: ... here.  Update
	reference to moved file.
	* gcc.dg/torture/c2x-stdarg-split-1b.c: Move to ...
	* gcc.dg/torture/c23-stdarg-split-1b.c: ... here.
	* objc.dg/attributes/gnu2x-attr-syntax-1.m: Move to ...
	* objc.dg/attributes/gnu23-attr-syntax-1.m: ... here.  Update
	reference to moved file.
	* g++.dg/cpp/elifdef-2.C: Update reference to moved file.
	* g++.dg/cpp/elifdef-4.C: Likewise.
	* gcc.dg/c11-float-dfp-1.c: Likewise.
	* gcc.dg/c11-float-dfp-2.c: Likewise.
	* gcc.dg/cpp/gnu11-elifdef-1.c: Likewise.
	* gcc.dg/dfp/ts18661-2-float-dfp-1.c: Likewise.

1 files changed, 164 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/c23-stdarg-4.c b/gcc/testsuite/gcc.dg/c23-stdarg-4.c
new file mode 100644
index 0000000..cbbd9ef
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/c23-stdarg-4.c
@@ -0,0 +1,164 @@
+/* Test C23 variadic functions with no named parameters, or last named
+   parameter with a declaration not allowed in C17.  Execution tests.  */
+/* { dg-do run } */
+/* { dg-options "-std=c23 -pedantic-errors" } */
+
+#include <stdarg.h>
+
+extern void abort (void);
+extern void exit (int);
+
+double
+f (...)
+{
+  va_list ap;
+  va_start (ap);
+  double ret = va_arg (ap, int);
+  ret += va_arg (ap, double);
+  ret += va_arg (ap, int);
+  ret += va_arg (ap, double);
+  va_end (ap);
+  return ret;
+}
+
+void
+g (...)
+{
+  va_list ap;
+  va_start (ap, random ! ignored, ignored ** text);
+  for (int i = 0; i < 10; i++)
+    if (va_arg (ap, double) != i)
+      abort ();
+  va_end (ap);
+}
+
+void
+h1 (register int x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h2 (int x(), ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h3 (int x[10], ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h4 (char x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h5 (float x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h6 (volatile long x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+struct s { char c[1000]; };
+
+void
+h7 (volatile struct s x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+int
+main ()
+{
+  if (f (1, 2.0, 3, 4.0) != 10.0)
+    abort ();
+  g (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0);
+  g (0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f);
+  h1 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h2 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h3 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h4 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h5 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h6 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h7 ((struct s) {}, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  exit (0);
+}