commit 5dc5ccde728279af5621ea4d513450822a126b03
Author: François-Xavier Coudert <fxcoudert@gcc.gnu.org>
Date:   2021-12-17 19:30:36 +0100

    Future-proof and homogeneize detection of darwin versions
    
    gcc/ChangeLog:
    
            * config/darwin-driver.c: Make version code more future-proof.
            * config.gcc: Homogeneize darwin versions.
            * configure.ac: Homogeneize darwin versions.
            * configure: Regenerate.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.dg/darwin-minversion-link.c: Test darwin21.
            * obj-c++.dg/cxx-ivars-3.mm: Homogeneize darwin versions.
            * obj-c++.dg/objc-gc-3.mm: Homogeneize darwin versions.
            * objc.dg/objc-gc-4.m: Homogeneize darwin versions.

diff --git a/gcc/config.gcc b/gcc/config.gcc
index c8824367b13..c8c0ef9aa05 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1847,7 +1847,7 @@ hppa[12]*-*-hpux11*)
 		dwarf2=no
 	fi
 	;;
-i[34567]86-*-darwin1[89]* | i[34567]86-*-darwin2[0-9]*)
+i[34567]86-*-darwin1[89]* | i[34567]86-*-darwin2*)
 	echo "Error: 32bit target is not supported after Darwin17" 1>&2
 	;;
 i[34567]86-*-darwin*)
@@ -1857,7 +1857,7 @@ i[34567]86-*-darwin*)
 	tmake_file="${tmake_file} ${cpu_type}/t-darwin32-biarch t-slibgcc"
 	tm_file="${cpu_type}/darwin32-biarch.h ${tm_file} "
 	;;
-x86_64-*-darwin1[89]* | x86_64-*-darwin2[01]*)
+x86_64-*-darwin1[89]* | x86_64-*-darwin2*)
 	# Only 64b from now
 	tm_defines="${tm_defines} TARGET_64BIT_DEFAULT=(OPTION_MASK_ISA_64BIT|OPTION_MASK_ABI_64)"
 	tm_defines="${tm_defines} TARGET_BI_ARCH=0"
diff --git a/gcc/config/darwin-driver.c b/gcc/config/darwin-driver.c
index 688fe8fabc0..e459a72f907 100644
--- a/gcc/config/darwin-driver.c
+++ b/gcc/config/darwin-driver.c
@@ -64,7 +64,8 @@ validate_macosx_version_min (const char *version_str)
 
   major = strtoul (version_str, &end, 10);
 
-  if (major < 10 || major > 12 ) /* macOS 10, 11, and 12 are known. */
+  /* macOS 10, 11, and 12 are known. clang accepts up to 99.  */
+  if (major < 10 || major > 99)
     return NULL;
 
   /* Skip a separating period, if there's one.  */
@@ -160,8 +161,7 @@ darwin_find_version_from_kernel (void)
 
   /* Darwin20 sees a transition to macOS 11.  In this, it seems that the
      mapping to macOS minor version is now shifted to the kernel minor
-     version - 1 (at least for the initial releases).  At this stage, we
-     don't know what macOS version will correspond to Darwin21.  */
+     version - 1 (at least for the initial releases).  */
   if (major_vers >= 20)
     {
       int minor_vers = *version_p++ - '0';
diff --git a/gcc/configure b/gcc/configure
index 5470987b62f..992a9d70092 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -26947,7 +26947,7 @@ $as_echo "$as_me: WARNING: LTO for $target requires binutils >= 2.20.1, but vers
 	;;
     esac
     case $target_os in
-       darwin2[0-9]* | darwin19*)
+       darwin2* | darwin19*)
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for llvm assembler x86-pad-for-align option" >&5
 $as_echo_n "checking assembler for llvm assembler x86-pad-for-align option... " >&6; }
 if ${gcc_cv_as_mllvm_x86_pad_for_align+:} false; then :
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 2b4914b6ec1..0db9c4cb027 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4692,7 +4692,7 @@ foo:	nop
 	;;
     esac
     case $target_os in
-       darwin2[[0-9]]* | darwin19*)
+       darwin2* | darwin19*)
         gcc_GAS_CHECK_FEATURE([llvm assembler x86-pad-for-align option],
           gcc_cv_as_mllvm_x86_pad_for_align,
           [-mllvm -x86-pad-for-align=false], [.text],,
diff --git a/gcc/testsuite/gcc.dg/darwin-minversion-link.c b/gcc/testsuite/gcc.dg/darwin-minversion-link.c
index 765fb799a91..b6ede31c985 100644
--- a/gcc/testsuite/gcc.dg/darwin-minversion-link.c
+++ b/gcc/testsuite/gcc.dg/darwin-minversion-link.c
@@ -15,7 +15,8 @@
 /* { dg-additional-options "-mmacosx-version-min=010.013.06 -DCHECK=101306" { target *-*-darwin17* } } */
 /* { dg-additional-options "-mmacosx-version-min=010.014.05 -DCHECK=101405" { target *-*-darwin18* } } */
 /* { dg-additional-options "-mmacosx-version-min=010.015.06 -DCHECK=101506" { target *-*-darwin19* } } */
-/* { dg-additional-options "-mmacosx-version-min=011.000.00 -DCHECK=110000" { target *-*-darwin20 } } */
+/* { dg-additional-options "-mmacosx-version-min=011.000.00 -DCHECK=110000" { target *-*-darwin20* } } */
+/* { dg-additional-options "-mmacosx-version-min=012.000.00 -DCHECK=120000" { target *-*-darwin21* } } */
 
 int
 main ()
diff --git a/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm b/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
index 07123559d72..27bae630ce8 100644
--- a/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
+++ b/gcc/testsuite/obj-c++.dg/cxx-ivars-3.mm
@@ -2,7 +2,7 @@
 
 // { dg-do run { target *-*-darwin* } }
 // { dg-skip-if "" { *-*-* } { "-fgnu-runtime" } { "" } }
-// { dg-skip-if "Headers incompatible with 10.4 APIs" { *-*-darwin1[1-9]* *-*-darwin2[0-9]* } { "-fnext-runtime" } { "" } }
+// { dg-skip-if "Headers incompatible with 10.4 APIs" { *-*-darwin1[1-9]* *-*-darwin2* } { "-fnext-runtime" } { "" } }
 // { dg-additional-options "-fobjc-call-cxx-cdtors -mmacosx-version-min=10.4 -framework Foundation" }
 // This test has no equivalent or meaning for m64/ABI V2
 // { dg-xfail-run-if "No Test Avail" {  *-*-darwin* && lp64 } { "-fnext-runtime" } { "" } }
diff --git a/gcc/testsuite/obj-c++.dg/objc-gc-3.mm b/gcc/testsuite/obj-c++.dg/objc-gc-3.mm
index 45ffbc5553d..18f2cbe8869 100644
--- a/gcc/testsuite/obj-c++.dg/objc-gc-3.mm
+++ b/gcc/testsuite/obj-c++.dg/objc-gc-3.mm
@@ -3,7 +3,7 @@
 /* Contributed by Ziemowit Laski <zlaski@apple.com>  */
 
 /* { dg-do compile } */
-/* { dg-skip-if "GC API is an error from Darwin16." { *-*-darwin1[6-9]* *-*-darwin2[0-9]* } { "-fnext-runtime" } { "" } } */
+/* { dg-skip-if "GC API is an error from Darwin16." { *-*-darwin1[6-9]* *-*-darwin2* } { "-fnext-runtime" } { "" } } */
 /* { dg-options "-fobjc-gc" } */
 /* { dg-prune-output "cc1objplus: warning: '-fobjc-gc' is ignored for '-fgnu-runtime'" } */
 
diff --git a/gcc/testsuite/objc.dg/objc-gc-4.m b/gcc/testsuite/objc.dg/objc-gc-4.m
index 8102a5a532f..1b2d9674969 100644
--- a/gcc/testsuite/objc.dg/objc-gc-4.m
+++ b/gcc/testsuite/objc.dg/objc-gc-4.m
@@ -3,7 +3,7 @@
 /* Contributed by Ziemowit Laski <zlaski@apple.com>  */
 
 /* { dg-do compile } */
-/* { dg-skip-if "GC API is an error from Darwin16." { *-*-darwin1[6-9]* *-*-darwin2[0-9]* } { "-fnext-runtime" } { "" } } */
+/* { dg-skip-if "GC API is an error from Darwin16." { *-*-darwin1[6-9]* *-*-darwin2* } { "-fnext-runtime" } { "" } } */
 /* { dg-options "-fobjc-gc" } */
 /* { dg-prune-output "cc1obj: warning: '-fobjc-gc' is ignored for '-fgnu-runtime'" } */
 
