[gcc r12-9333] libstdc++: Fix orphaned/nested output of configure checks

[gcc r12-9333] libstdc++: Fix orphaned/nested output of configure checks

[Jonathan Wakely]

https://gcc.gnu.org/g:274907c73647d2a1394523bd0e714aa920b51595

commit r12-9333-g274907c73647d2a1394523bd0e714aa920b51595
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Nov 25 11:40:37 2022 +0000

    libstdc++: Fix orphaned/nested output of configure checks
    
    This moves two AC_MSG_RESULT lines for <uchar.h> features so that they
    are only printed when the corresponding AC_MSG_CHECKING actually
    happened. This fixes configure output like:
    
    checking for uchar.h... no
    no
    checking for int64_t... yes
    
    Also move the AC_MSG_CHECKING for libbacktrace support so it doesn't
    come after AC_CHECK_HEADERS output. This fixes:
    
    checking whether to build libbacktrace support... checking for sys/mman.h... (cached) yes
    yes
    
    libstdc++-v3/ChangeLog:
    
            * acinclude.m4 (GLIBCXX_CHECK_UCHAR_H): Don't use AC_MSG_RESULT
            unless the AC_MSG_CHECKING happened.
            * configure: Regenerate.
    
    (cherry picked from commit 7b648e8313fdad9b782986eabf0c25253e6ff37e)

Diff:
---
 libstdc++-v3/acinclude.m4 |  6 +++---
 libstdc++-v3/configure    | 12 ++++++------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index e3cc3a8e867..04f2153fce3 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -2060,10 +2060,10 @@ AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [
 		   ],
 		   [], [ac_uchar_c8rtomb_mbrtoc8_fchar8_t=yes],
 		       [ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no])
+    AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_fchar8_t)
   else
     ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no
   fi
-  AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_fchar8_t)
   if test x"$ac_uchar_c8rtomb_mbrtoc8_fchar8_t" = x"yes"; then
     AC_DEFINE(_GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_FCHAR8_T, 1,
 	      [Define if c8rtomb and mbrtoc8 functions in <uchar.h> should be
@@ -2082,10 +2082,10 @@ AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [
 		   ],
 		   [], [ac_uchar_c8rtomb_mbrtoc8_cxx20=yes],
 		       [ac_uchar_c8rtomb_mbrtoc8_cxx20=no])
+    AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_cxx20)
   else
     ac_uchar_c8rtomb_mbrtoc8_cxx20=no
   fi
-  AC_MSG_RESULT($ac_uchar_c8rtomb_mbrtoc8_cxx20)
   if test x"$ac_uchar_c8rtomb_mbrtoc8_cxx20" = x"yes"; then
     AC_DEFINE(_GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_CXX20, 1,
 	      [Define if c8rtomb and mbrtoc8 functions in <uchar.h> should be
@@ -5022,6 +5022,7 @@ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize"
   if test "$enable_libstdcxx_backtrace" = "auto"; then
     enable_libstdcxx_backtrace=no
   fi
+  AC_MSG_RESULT($enable_libstdcxx_backtrace)
   if test "$enable_libstdcxx_backtrace" = "yes"; then
     BACKTRACE_SUPPORTED=1
 
@@ -5068,7 +5069,6 @@ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize"
     BACKTRACE_USES_MALLOC=0
     BACKTRACE_SUPPORTS_THREADS=0
   fi
-  AC_MSG_RESULT($enable_libstdcxx_backtrace)
   GLIBCXX_CONDITIONAL(ENABLE_BACKTRACE, [test "$enable_libstdcxx_backtrace" = yes])
 ])
 
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index eac60392121..c07e2756974 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -19184,11 +19184,11 @@ else
   ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_uchar_c8rtomb_mbrtoc8_fchar8_t" >&5
+$as_echo "$ac_uchar_c8rtomb_mbrtoc8_fchar8_t" >&6; }
   else
     ac_uchar_c8rtomb_mbrtoc8_fchar8_t=no
   fi
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_uchar_c8rtomb_mbrtoc8_fchar8_t" >&5
-$as_echo "$ac_uchar_c8rtomb_mbrtoc8_fchar8_t" >&6; }
   if test x"$ac_uchar_c8rtomb_mbrtoc8_fchar8_t" = x"yes"; then
 
 $as_echo "#define _GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_FCHAR8_T 1" >>confdefs.h
@@ -19222,11 +19222,11 @@ else
   ac_uchar_c8rtomb_mbrtoc8_cxx20=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_uchar_c8rtomb_mbrtoc8_cxx20" >&5
+$as_echo "$ac_uchar_c8rtomb_mbrtoc8_cxx20" >&6; }
   else
     ac_uchar_c8rtomb_mbrtoc8_cxx20=no
   fi
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_uchar_c8rtomb_mbrtoc8_cxx20" >&5
-$as_echo "$ac_uchar_c8rtomb_mbrtoc8_cxx20" >&6; }
   if test x"$ac_uchar_c8rtomb_mbrtoc8_cxx20" = x"yes"; then
 
 $as_echo "#define _GLIBCXX_USE_UCHAR_C8RTOMB_MBRTOC8_CXX20 1" >>confdefs.h
@@ -77526,6 +77526,8 @@ $as_echo_n "checking whether to build libbacktrace support... " >&6; }
   if test "$enable_libstdcxx_backtrace" = "auto"; then
     enable_libstdcxx_backtrace=no
   fi
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_libstdcxx_backtrace" >&5
+$as_echo "$enable_libstdcxx_backtrace" >&6; }
   if test "$enable_libstdcxx_backtrace" = "yes"; then
     BACKTRACE_SUPPORTED=1
 
@@ -77594,8 +77596,6 @@ $as_echo "#define HAVE_STACKTRACE 1" >>confdefs.h
     BACKTRACE_USES_MALLOC=0
     BACKTRACE_SUPPORTS_THREADS=0
   fi
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_libstdcxx_backtrace" >&5
-$as_echo "$enable_libstdcxx_backtrace" >&6; }