[Tarantool-patches] [PATCH 2/2] tuple: fix access by JSON path starting from '[*]'

[Vladislav Shpilevoy]

Tuple JSON field access crashed when '[*]' was used as a first
part of the JSON path. The patch makes it treated like 'field not
found'.

Follow-up #5224
---
 src/box/tuple.c                                 | 3 ++-
 test/box/gh-5224-multikey-field-access.result   | 9 +++++++++
 test/box/gh-5224-multikey-field-access.test.lua | 6 ++++++
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/box/tuple.c b/src/box/tuple.c
index 9f0f24c64..e77753a5b 100644
--- a/src/box/tuple.c
+++ b/src/box/tuple.c
@@ -531,7 +531,8 @@ tuple_field_raw_by_full_path(struct tuple_format *format, const char *tuple,
 		break;
 	}
 	default:
-		assert(token.type == JSON_TOKEN_END);
+		assert(token.type == JSON_TOKEN_END ||
+		       token.type == JSON_TOKEN_ANY);
 		return NULL;
 	}
 	return tuple_field_raw_by_path(format, tuple, field_map, fieldno,
diff --git a/test/box/gh-5224-multikey-field-access.result b/test/box/gh-5224-multikey-field-access.result
index 014e810d0..20df44cc3 100644
--- a/test/box/gh-5224-multikey-field-access.result
+++ b/test/box/gh-5224-multikey-field-access.result
@@ -150,6 +150,15 @@ t['[2][3]']
  | - {'p1': {'p2': 6}}
  | ...
 
+--
+-- Multikey path part could crash when used as a first part of the path during
+-- accessing a tuple field.
+--
+t['[*]']
+ | ---
+ | - null
+ | ...
+
 s:drop()
  | ---
  | ...
diff --git a/test/box/gh-5224-multikey-field-access.test.lua b/test/box/gh-5224-multikey-field-access.test.lua
index 19765171e..6f6691d3c 100644
--- a/test/box/gh-5224-multikey-field-access.test.lua
+++ b/test/box/gh-5224-multikey-field-access.test.lua
@@ -63,4 +63,10 @@ t['[2][3].p1.p2']
 t['[2][3].p1']
 t['[2][3]']
 
+--
+-- Multikey path part could crash when used as a first part of the path during
+-- accessing a tuple field.
+--
+t['[*]']
+
 s:drop()
-- 
2.21.1 (Apple Git-122.3)