testsuite: Unbreak compat.exp testing with alt compiler PR93294

2020-01-17  Jakub Jelinek  <jakub@redhat.com>

	PR testsuite/93294
	* lib/c-compat.exp (compat-use-alt-compiler): Handle
	-fdiagnostics-urls=never similarly to -fdiagnostics-color=never.
	(compat_setup_dfp): Likewise.

gcc/testsuite/ChangeLog

+2020-01-17  Jakub Jelinek  <jakub@redhat.com>
+
+	PR testsuite/93294
+	* lib/c-compat.exp (compat-use-alt-compiler): Handle
+	-fdiagnostics-urls=never similarly to -fdiagnostics-color=never.
+	(compat_setup_dfp): Likewise.
+
 2020-01-16  Kerem Kat  <keremkat@gmail.com>
 
 	PR c/92833

gcc/testsuite/lib/c-compat.exp

@@ -36,6 +36,7 @@ load_lib target-libpath.exp
 proc compat-use-alt-compiler { } {
     global GCC_UNDER_TEST ALT_CC_UNDER_TEST
     global compat_same_alt compat_alt_caret compat_alt_color compat_no_line_no
+    global compat_alt_urls
     global TEST_ALWAYS_FLAGS
 
     # We don't need to do this if the alternate compiler is actually
@@ -48,6 +49,9 @@ proc compat-use-alt-compiler { } {
 	if { $compat_alt_color == 0 } then {
 	    regsub -- "-fdiagnostics-color=never" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
 	}
+	if { $compat_alt_urls == 0 } then {
+	    regsub -- "-fdiagnostics-urls=never" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
+	}
 	if { $compat_no_line_no == 0 } then {
 	    regsub -- "-fno-diagnostics-show-line-numbers" $TEST_ALWAYS_FLAGS "" TEST_ALWAYS_FLAGS
 	}
@@ -80,11 +84,13 @@ proc compat_setup_dfp { } {
     global compat_have_dfp
     global compat_alt_caret
     global compat_alt_color
+    global compat_alt_urls
     global compat_no_line_no
     global TEST_ALWAYS_FLAGS compat_save_TEST_ALWAYS_FLAGS
 
     set compat_alt_caret 0
     set compat_alt_color 0
+    set compat_alt_urls 0
     set compat_no_line_no 0
     set compat_save_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
 
@@ -105,6 +111,10 @@ proc compat_setup_dfp { } {
 		int dummy; } "-fdiagnostics-color=never"] != 0 } {
 	    set compat_alt_color 1
 	}
+	if { [check_no_compiler_messages_nocache compat_alt_has_urls object {
+		int dummy; } "-fdiagnostics-urls=never"] != 0 } {
+	    set compat_alt_urls 1
+	}
 	if { [check_no_compiler_messages_nocache compat_alt_has_no_line_no object {
 		int dummy; } "-fno-diagnostics-show-line-numbers"] != 0 } {
 	    set compat_no_line_no 1