[PATCH] testsuite: Unbreak compat.exp testing with alt compiler (PR testsuite/93294)

[Jakub Jelinek]

Hi!

The PR87488 changes include:
        * lib/prune.exp (TEST_ALWAYS_FLAGS): Add -fdiagnostics-urls=never.
Unfortunately, this broke all the compat.exp etc. compatibility testing with
alternate compilers, because those compilers (likely) don't understand this
new option and thus all alt compilations FAIL and everything that needs it
is then UNRESOLVED.

Fixed thusly, by handling it like -fdiagnostics-color=never and other
similar options.

Tested on x86_64-linux, ok for trunk?

2020-01-16  Jakub Jelinek  <ja...@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/lib/c-compat.exp.jj   2020-01-12 11:54:38.457382571 +0100
+++ gcc/testsuite/lib/c-compat.exp      2020-01-16 17:48:25.688227433 +0100
@@ -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


        Jakub