libstdc++: Remove dg-options "-std=gnu++20" from std::format tests

The testsuite will automatically select C++20 for these tests now, and
removing the hardcoded -std option allows them to be tested for C++23
and C++26 as well.

libstdc++-v3/ChangeLog:

	* testsuite/std/format/arguments/args.cc: Remove dg-options.
	* testsuite/std/format/arguments/lwg3810.cc: Likewise.
	* testsuite/std/format/error.cc: Likewise.
	* testsuite/std/format/format_string.cc: Likewise.
	* testsuite/std/format/formatter/concept.cc: Likewise.
	* testsuite/std/format/formatter/ext_float.cc: Likewise.
	* testsuite/std/format/formatter/requirements.cc: Likewise.
	* testsuite/std/format/functions/107871.cc: Likewise.
	* testsuite/std/format/functions/format.cc: Likewise.
	* testsuite/std/format/functions/format_to.cc: Likewise.
	* testsuite/std/format/functions/format_to_n.cc: Likewise.
	* testsuite/std/format/functions/size.cc: Likewise.
	* testsuite/std/format/functions/vformat_to.cc: Likewise.
	* testsuite/std/format/parse_ctx.cc: Likewise.
	* testsuite/std/format/string.cc: Likewise.
	* testsuite/std/format/string_neg.cc: Likewise.
	* testsuite/std/format/functions/format_c++23.cc: Removed.

17 files changed, 0 insertions, 21 deletions

diff --git a/libstdc++-v3/testsuite/std/format/arguments/args.cc b/libstdc++-v3/testsuite/std/format/arguments/args.cc
index ae2eab6..a45f3fb 100644
--- a/libstdc++-v3/testsuite/std/format/arguments/args.cc
+++ b/libstdc++-v3/testsuite/std/format/arguments/args.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/arguments/lwg3810.cc b/libstdc++-v3/testsuite/std/format/arguments/lwg3810.cc
index 9ccb654..f89f402 100644
--- a/libstdc++-v3/testsuite/std/format/arguments/lwg3810.cc
+++ b/libstdc++-v3/testsuite/std/format/arguments/lwg3810.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 // LWG 3810. CTAD for std::basic_format_args
diff --git a/libstdc++-v3/testsuite/std/format/error.cc b/libstdc++-v3/testsuite/std/format/error.cc
index a6918f5..878f60e 100644
--- a/libstdc++-v3/testsuite/std/format/error.cc
+++ b/libstdc++-v3/testsuite/std/format/error.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/format_string.cc b/libstdc++-v3/testsuite/std/format/format_string.cc
index 1dd6ca8..71c3d5d 100644
--- a/libstdc++-v3/testsuite/std/format/format_string.cc
+++ b/libstdc++-v3/testsuite/std/format/format_string.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/formatter/concept.cc b/libstdc++-v3/testsuite/std/format/formatter/concept.cc
index fe56dc4..e28a8c2 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/concept.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/concept.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++23" }
 // { dg-do compile { target c++23 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/formatter/ext_float.cc b/libstdc++-v3/testsuite/std/format/formatter/ext_float.cc
index 8981029..82e696f 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/ext_float.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/ext_float.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/formatter/requirements.cc b/libstdc++-v3/testsuite/std/format/formatter/requirements.cc
index 7d95f7f..bde67e5 100644
--- a/libstdc++-v3/testsuite/std/format/formatter/requirements.cc
+++ b/libstdc++-v3/testsuite/std/format/formatter/requirements.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/functions/107871.cc b/libstdc++-v3/testsuite/std/format/functions/107871.cc
index 1fb558e..f9125b9 100644
--- a/libstdc++-v3/testsuite/std/format/functions/107871.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/107871.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/functions/format.cc b/libstdc++-v3/testsuite/std/format/functions/format.cc
index 5141cbd..dacc276 100644
--- a/libstdc++-v3/testsuite/std/format/functions/format.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/format.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 // { dg-add-options no_pch }
 
diff --git a/libstdc++-v3/testsuite/std/format/functions/format_c++23.cc b/libstdc++-v3/testsuite/std/format/functions/format_c++23.cc
deleted file mode 100644
index 3caa70f..0000000
--- a/libstdc++-v3/testsuite/std/format/functions/format_c++23.cc
+++ /dev/null
@@ -1,5 +0,0 @@
-// { dg-do run { target c++23 } }
-// { dg-add-options no_pch }
-// This test does not have -std=gnu++20 in dg-options so that format.cc
-// can be tested for e.g. -std=c++26
-#include "format.cc"
diff --git a/libstdc++-v3/testsuite/std/format/functions/format_to.cc b/libstdc++-v3/testsuite/std/format/functions/format_to.cc
index c5c3c50..94e6262b 100644
--- a/libstdc++-v3/testsuite/std/format/functions/format_to.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/format_to.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/functions/format_to_n.cc b/libstdc++-v3/testsuite/std/format/functions/format_to_n.cc
index f7df3ed..d698222 100644
--- a/libstdc++-v3/testsuite/std/format/functions/format_to_n.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/format_to_n.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/functions/size.cc b/libstdc++-v3/testsuite/std/format/functions/size.cc
index 4509a7c..1ece410 100644
--- a/libstdc++-v3/testsuite/std/format/functions/size.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/size.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/functions/vformat_to.cc b/libstdc++-v3/testsuite/std/format/functions/vformat_to.cc
index 6fa33b9..fe0367f 100644
--- a/libstdc++-v3/testsuite/std/format/functions/vformat_to.cc
+++ b/libstdc++-v3/testsuite/std/format/functions/vformat_to.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/parse_ctx.cc b/libstdc++-v3/testsuite/std/format/parse_ctx.cc
index 260caf1..497427b 100644
--- a/libstdc++-v3/testsuite/std/format/parse_ctx.cc
+++ b/libstdc++-v3/testsuite/std/format/parse_ctx.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/string.cc b/libstdc++-v3/testsuite/std/format/string.cc
index a472f8d..5d33864 100644
--- a/libstdc++-v3/testsuite/std/format/string.cc
+++ b/libstdc++-v3/testsuite/std/format/string.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do run { target c++20 } }
 
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/format/string_neg.cc b/libstdc++-v3/testsuite/std/format/string_neg.cc
index 8ec7096..7a60ef8 100644
--- a/libstdc++-v3/testsuite/std/format/string_neg.cc
+++ b/libstdc++-v3/testsuite/std/format/string_neg.cc
@@ -1,4 +1,3 @@
-// { dg-options "-std=gnu++20" }
 // { dg-do compile { target c++20 } }
 
 #include <format>