Remove HAVE_SNPRINTF

This fixes up commit 77c184df
which explicitly specifies that we use ISO/IEC 9899:1999 (C99),
which includes the snprintf() function.

client/mysqlimport.c

 /*
    Copyright (c) 2000, 2015, Oracle and/or its affiliates.
-   Copyright (c) 2011, 2017, MariaDB
+   Copyright (c) 2011, 2022, MariaDB
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -323,11 +323,7 @@ static int write_to_table(char *filename, MYSQL *mysql)
   {
     if (verbose)
       fprintf(stdout, "Deleting the old data from table %s\n", tablename);
-#ifdef HAVE_SNPRINTF
     snprintf(sql_statement, FN_REFLEN*16+256, "DELETE FROM %s", tablename);
-#else
-    sprintf(sql_statement, "DELETE FROM %s", tablename);
-#endif
     if (mysql_query(mysql, sql_statement))
     {
       db_error_with_table(mysql, tablename);

config.h.cmake

@@ -224,7 +224,6 @@
 #cmakedefine HAVE_SIGWAIT 1
 #cmakedefine HAVE_SIGWAITINFO 1
 #cmakedefine HAVE_SLEEP 1
-#cmakedefine HAVE_SNPRINTF 1
 #cmakedefine HAVE_STPCPY 1
 #cmakedefine HAVE_STRERROR 1
 #cmakedefine HAVE_STRCOLL 1

configure.cmake

@@ -407,7 +407,6 @@ CHECK_FUNCTION_EXISTS (sigwait HAVE_SIGWAIT)
 CHECK_FUNCTION_EXISTS (sigwaitinfo HAVE_SIGWAITINFO)
 CHECK_FUNCTION_EXISTS (sigset HAVE_SIGSET)
 CHECK_FUNCTION_EXISTS (sleep HAVE_SLEEP)
-CHECK_FUNCTION_EXISTS (snprintf HAVE_SNPRINTF)
 CHECK_FUNCTION_EXISTS (stpcpy HAVE_STPCPY)
 CHECK_FUNCTION_EXISTS (strcoll HAVE_STRCOLL)
 CHECK_FUNCTION_EXISTS (strerror HAVE_STRERROR)

sql/sql_analyse.cc

@@ -415,13 +415,9 @@ void field_real::add()
   }
   else
   {
-#ifdef HAVE_SNPRINTF
     buff[sizeof(buff)-1]=0;			// Safety
     snprintf(buff, sizeof(buff)-1, "%-.*f", (int) decs, num);
     length = (uint) strlen(buff);
-#else
-    length= snprintf(buff, sizeof(buff), "%-.*f", (int) decs, num);
-#endif
 
     // We never need to check further than this
     end = buff + length - 1 - decs + max_notzero_dec_len;

storage/maria/maria_ftdump.c

@@ -119,11 +119,7 @@ int main(int argc,char *argv[])
     if (subkeys.i >= 0)
       weight= subkeys.f;
 
-#ifdef HAVE_SNPRINTF
     snprintf(buf,MAX_LEN,"%.*s",(int) keylen,info->lastkey_buff+1);
-#else
-    sprintf(buf,"%.*s",(int) keylen,info->lastkey_buff+1);
-#endif
     my_casedn_str(default_charset_info,buf);
     total++;
     lengths[keylen]++;

storage/myisam/myisam_ftdump.c

@@ -117,11 +117,7 @@ int main(int argc,char *argv[])
     if (subkeys.i >= 0)
       weight= subkeys.f;
 
-#ifdef HAVE_SNPRINTF
     snprintf(buf,MAX_LEN,"%.*s",(int) keylen,info->lastkey+1);
-#else
-    sprintf(buf,"%.*s",(int) keylen,info->lastkey+1);
-#endif
     my_casedn_str(default_charset_info,buf);
     total++;
     lengths[keylen]++;