Null pointer dereference in tnt_schema_free. closes gh-55

bigbes · bigbes · commit 764adca91bd9 · 2017-02-16T19:16:00.000+03:00
diff --git a/tnt/tnt_schema.c b/tnt/tnt_schema.c
@@ -299,6 +299,8 @@ void tnt_schema_flush(struct tnt_schema *obj) {
 }
 
 void tnt_schema_free(struct tnt_schema *obj) {
+	if (obj == NULL)
+		return NULL;
 	tnt_schema_space_free(obj->space_hash);
 	mh_assoc_delete(obj->space_hash);
 }

Original file line number	Diff line number	Diff line change
`@@ -299,6 +299,8 @@ void tnt_schema_flush(struct tnt_schema *obj) {`
`299`	`299`	`}`
`300`	`300`
`301`	`301`	`void tnt_schema_free(struct tnt_schema *obj) {`
	`302`	`+ if (obj == NULL)`
	`303`	`+ return NULL;`
`302`	`304`	`tnt_schema_space_free(obj->space_hash);`
`303`	`305`	`mh_assoc_delete(obj->space_hash);`
`304`	`306`	`}`