[gcc r13-7513] libstdc++: Fix configure test for 32-bit targets

[Jonathan Wakely]

https://gcc.gnu.org/g:b7b70cba6564e2988f6430e5238d97b5389a6f1d

commit r13-7513-gb7b70cba6564e2988f6430e5238d97b5389a6f1d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed May 31 19:05:32 2023 +0100

    libstdc++: Fix configure test for 32-bit targets
    
    The -mlarge model for msp430-elf uses 20-bit pointers, which means that
    sizeof(void*) == 4 and so the r14-1432-g51cf0b3949b88b change gives the
    wrong answer. Check __INTPTR_WIDTH__ >= 32 instead.
    
    libstdc++-v3/ChangeLog:
    
            * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Fix for 32-bit pointers
            to check __INT_PTR_WIDTH__ instead of sizeof(void*).
            * configure: Regenerate.
    
    (cherry picked from commit 2a919c08abb2cc5aeb31abb400b3489f67467dbf)

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

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 6f2c4374048..4adf23a771d 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -5202,7 +5202,7 @@ AC_DEFUN([GLIBCXX_ZONEINFO_DIR], [
 	;;
     esac
 
-    AC_COMPUTE_INT(glibcxx_cv_at_least_32bit, [sizeof(void*) >= 4])
+    AC_COMPUTE_INT(glibcxx_cv_at_least_32bit, [__INTPTR_WIDTH__ >= 32])
     if test "$glibcxx_cv_at_least_32bit" -ne 0; then
       # Also embed a copy of the tzdata.zi file as a static string.
       embed_zoneinfo=yes
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 95b8a8de649..02a931cd096 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -71558,7 +71558,7 @@ fi
 	;;
     esac
 
-    if ac_fn_c_compute_int "$LINENO" "sizeof(void*) >= 4" "glibcxx_cv_at_least_32bit"        ""; then :
+    if ac_fn_c_compute_int "$LINENO" "__INTPTR_WIDTH__ >= 32" "glibcxx_cv_at_least_32bit"        ""; then :
 
 fi