[2.7] bpo-34457: Python/ast.c: Add missing NULL check to alias_for_import_name()...

Reported by Svace static analyzer.
(cherry picked from commit 28853a249b1d0c890b7e9ca345290bb8c1756446)

Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>

diff --git a/Python/ast.c b/Python/ast.c
index 318c0bb27d35c3fbbe70569934e9f41651b5927f..946032589f4b003b4dce257c6dd3f81cc2733022 100644 (file)
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -2520,6 +2520,8 @@ alias_for_import_name(struct compiling *c, const node *n, int store)
             break;
         case STAR:
             str = PyString_InternFromString("*");
+            if (!str)
+                return NULL;
             PyArena_AddPyObject(c->c_arena, str);
             return alias(str, NULL, c->c_arena);
         default: