From a73d08319537d807a520a72bc5bd17279672c3de Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Sun, 16 Dec 2018 19:38:57 -0500
Subject: Modernize our code for looking up descriptive strings for Unix
 signals.

At least as far back as the 2008 spec, POSIX has defined strsignal(3)
for looking up descriptive strings for signal numbers.  We hadn't gotten
the word though, and were still using the crufty old sys_siglist array,
which is in no standard even though most Unixen provide it.

Aside from not being formally standards-compliant, this was just plain
ugly because it involved #ifdef's at every place using the code.

To eliminate the #ifdef's, create a portability function pg_strsignal,
which wraps strsignal(3) if available and otherwise falls back to
sys_siglist[] if available.  The set of Unixen with neither API is
probably empty these days, but on any platform with neither, you'll
just get "unrecognized signal".  All extant callers print the numeric
signal number too, so no need to work harder than that.

Along the way, upgrade pg_basebackup's child-error-exit reporting
to match the rest of the system.

Discussion: https://postgr.es/m/25758.1544983503@sss.pgh.pa.us
---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'configure')

diff --git a/configure b/configure
index dce6d98cf6..3dddd8d0ed 100755
--- a/configure
+++ b/configure
@@ -15230,7 +15230,7 @@ fi
 LIBS_including_readline="$LIBS"
 LIBS=`echo "$LIBS" | sed -e 's/-ledit//g' -e 's/-lreadline//g'`
 
-for ac_func in cbrt clock_gettime copyfile fdatasync getifaddrs getpeerucred getrlimit mbstowcs_l memmove poll posix_fallocate ppoll pstat pthread_is_threaded_np readlink setproctitle setproctitle_fast setsid shm_open strchrnul symlink sync_file_range utime utimes wcstombs_l
+for ac_func in cbrt clock_gettime copyfile fdatasync getifaddrs getpeerucred getrlimit mbstowcs_l memmove poll posix_fallocate ppoll pstat pthread_is_threaded_np readlink setproctitle setproctitle_fast setsid shm_open strchrnul strsignal symlink sync_file_range utime utimes wcstombs_l
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-- 
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