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| author | Kirill Simonov <xi@resolvent.net> | 2014-02-02 20:53:10 -0600 |
|---|---|---|
| committer | Kirill Simonov <xi@resolvent.net> | 2014-02-02 20:53:10 -0600 |
| commit | 2d94fc50024ae139903ed55a7fd0748ec9fa70e4 (patch) | |
| tree | 5b7899b1cbbdc60710682ef1c8c2dfc06eb96032 /src/yaml_private.h | |
| parent | df33f257e5b99ecde7f9b6dbc6d449dce76a139f (diff) | |
| download | libyaml-git-2d94fc50024ae139903ed55a7fd0748ec9fa70e4.tar.gz | |
Prevent node index overflow (Reported by Florian Weimer).
Diffstat (limited to 'src/yaml_private.h')
| -rw-r--r-- | src/yaml_private.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/yaml_private.h b/src/yaml_private.h index ed5ea66..f835d3d 100644 --- a/src/yaml_private.h +++ b/src/yaml_private.h @@ -421,6 +421,12 @@ yaml_queue_extend(void **start, void **head, void **tail, void **end); #define STACK_EMPTY(context,stack) \ ((stack).start == (stack).top) +#define STACK_LIMIT(context,stack,size) \ + ((stack).top - (stack).start < (size) ? \ + 1 : \ + ((context)->error = YAML_MEMORY_ERROR, \ + 0)) + #define PUSH(context,stack,value) \ (((stack).top != (stack).end \ || yaml_stack_extend((void **)&(stack).start, \ |