Fix #14014: Search number > 2147483647 fails on 64-bit systems

When a numeric search term is entered, the Filter API will only check
for matches in the bug and bugnote id fields when the search term is
within a valid range.

This was never an issue on 32-bit systems, but on 64-bit OS, PostgreSQL
throws an "integer out of range" error when executing the query because
the search term is cast to (int) and PHP_INT_MAX is greater than the
largest value allowed for the numeric DB fields (4-byte int, 2^31-1).

This issue does not exist on MySQL as the value is capped to the maximum
allowed; behavior was not tested on Oracle, DB2 or MSSQL.

The fix for PostgreSQL behavior is a hack, but I can't think of any
better solution (ideally, we should be able to query the DB for the
maximum allowed value for a field).

core/filter_api.php

@@ -1957,11 +1957,20 @@ function filter_get_bug_rows( &$p_page_number, &$p_per_page, &$p_page_count, &$p
 			$t_where_params[] = $c_search;
 
 			if( is_numeric( $t_search_term ) ) {
-				$c_search_int = (int) $t_search_term;
-				$t_textsearch_where_clause .= " OR $t_bug_table.id = " . db_param();
-				$t_textsearch_where_clause .= " OR $t_bugnote_table.id = " . db_param();
-				$t_where_params[] = $c_search_int;
-				$t_where_params[] = $c_search_int;
+				// PostgreSQL on 64-bit OS hack (see #14014)
+				if( PHP_INT_MAX > 0x7FFFFFFF && db_is_pgsql() ) {
+					$t_search_max = 0x7FFFFFFF;
+				} else {
+					$t_search_max = PHP_INT_MAX;
+				}
+				// Note: no need to test negative values, '-' sign has been removed
+				if( $t_search_term <= $t_search_max ) {
+					$c_search_int = (int) $t_search_term;
+					$t_textsearch_where_clause .= " OR $t_bug_table.id = " . db_param();
+					$t_textsearch_where_clause .= " OR $t_bugnote_table.id = " . db_param();
+					$t_where_params[] = $c_search_int;
+					$t_where_params[] = $c_search_int;
+				}
 			}
 
 			$t_textsearch_where_clause .= ' )';