Properly initialize displaysize

From Microsoft's `SQLColAttribute()` documentation[1]: | Please note that some drivers may only write the lower 32-bit or | 16-bit of a buffer and leave the higher-order bit unchanged. | Therefore, applications should initialize the value to 0 before | calling this function. [1] <https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlcolattribute-function>
php · Jun 24, 2020 · 38177dc · 38177dc
1 parent 16fe64d
commit 38177dc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ext/pdo_odbc/odbc_stmt.c b/ext/pdo_odbc/odbc_stmt.c
@@ -565,7 +565,7 @@ static int odbc_stmt_describe(pdo_stmt_t *stmt, int colno)
 	RETCODE rc;
 	SWORD	colnamelen;
 	SQLULEN	colsize;
-	SQLLEN displaysize;
+	SQLLEN displaysize = 0;
 
 	rc = SQLDescribeCol(S->stmt, colno+1, S->cols[colno].colname,
 			sizeof(S->cols[colno].colname)-1, &colnamelen,