nospec: Fix a NULL dereference

We've started marking assembly as __inline as in "asm __inline volatile (" and Smatch can't handle that. The latest upstream Sparse apparently parses this correctly so I will have to update to that. Signed-off-by: Dan Carpenter <[email protected]>
illumos · Sep 19, 2019 · bebc1eb · bebc1eb
1 parent 2cca2d8
commit bebc1eb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/check_nospec.c b/check_nospec.c
@@ -179,6 +179,8 @@ static int is_nospec_asm(struct statement *stmt)
 
 	if (!stmt || stmt->type != STMT_ASM)
 		return 0;
+	if (!stmt->asm_string)
+		return 0;
 	macro = get_macro_name(stmt->asm_string->pos);
 	if (!macro || strcmp(macro, "CALL_NOSPEC") != 0)
 		return 0;