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-rw-r--r--src/glsl/list.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/glsl/list.h b/src/glsl/list.h
index 914ce962527..a4c64082122 100644
--- a/src/glsl/list.h
+++ b/src/glsl/list.h
@@ -584,6 +584,15 @@ inline void exec_node::insert_before(exec_list *before)
(__inst) = (__type *)(__inst)->prev)
/**
+ * This version is safe even if the current node is removed.
+ */
+#define foreach_in_list_safe(__type, __node, __list) \
+ for (__type *__node = (__type *)(__list)->head, \
+ *__next = (__type *)__node->next; \
+ __next != NULL; \
+ __node = __next, __next = (__type *)__next->next)
+
+/**
* Iterate through two lists at once. Stops at the end of the shorter list.
*
* This is safe against either current node being removed or replaced.