Re: [GNU Autoconf 2.71] testsuite: 509 514 failed

On Sat, Jul 2, 2022, at 11:18 AM, Tom Lane wrote:
> This is from "make check" on an M1 Mac Mini, running Monterey.
> It's effectively the same platform as the laptop in my previous report,
> but here I've got MacPorts at the front of the search path, so that
> there's a bunch of tools that are being supplied by MacPorts not Apple.
> If I remove /opt/local/bin from PATH I get results that look the same
> as the previous report, so MacPorts helps ... but not enough.

Can you please try this patch on Monterey?

diff --git a/lib/autoconf/headers.m4 b/lib/autoconf/headers.m4
index 8944da41..5cd1f4d5 100644
--- a/lib/autoconf/headers.m4
+++ b/lib/autoconf/headers.m4
@@ -633,8 +633,10 @@ AC_DEFUN([AC_CHECK_HEADER_STDBOOL],
              bool *pp = &p;
 
              /* C 1999 specifies that bool, true, and false are to be
-                macros, but C++ 2011 and later overrule this.  */
-             #if __cplusplus < 201103
+                macros, but C++ 2011 overrules this.  The C++ committee
+                was codifying existing practice, so we allow them to
+                not be macros whenever __cplusplus is defined.  */
+             #ifndef __cplusplus
               #ifndef bool
                #error "bool is not defined"
               #endif
diff --git a/tests/local.at b/tests/local.at
index 3f348929..f79f57ff 100644
--- a/tests/local.at
+++ b/tests/local.at
@@ -593,9 +593,9 @@ AT_CMP([at_defines-$1], [at_defines-$2])[]dnl
 m4_define([_AT_DEFINES_CMP_PRUNE],
 [m4_bmatch([$1],
   [^vary:],
-[	/@%:@define ]m4_bpatsubsts([$1], [\<vary:], [])dnl
+[	/@%:@define ]m4_bpatsubsts([$1], [\<vary:], [])[]dnl
 [@<:@ @{:@@:>@/ d ;@%:@@:}@
-	/@%:@undef ]m4_bpatsubsts([$1], [\<vary:], [])dnl
+	/@%:@undef ]m4_bpatsubsts([$1], [\<vary:], [])[]dnl
 [@<:@ @{:@@:>@/ d ;@%:@@:}@
 ],
   [m4_fatal([unrecognized AT_DEFINES_CMP variance token: "$1"])])])