Merge remote branch 'cworth/master'

Conflicts:
	ast_to_hir.cpp
	ir.cpp

This brings in the talloc-based memory management work, so that the
compiler (almost) no longer leaks memory.

1 files changed, 25 insertions, 0 deletions

diff --git a/list.h b/list.h
index 0b91647be4..7732d66d7a 100644
--- a/list.h
+++ b/list.h
@@ -66,7 +66,13 @@
 
 #ifndef __cplusplus
 #include <stddef.h>
+#include <talloc.h>
+#else
+extern "C" {
+#include <talloc.h>
+}
 #endif
+
 #include <assert.h>
 
 struct exec_node {
@@ -74,6 +80,25 @@ struct exec_node {
    struct exec_node *prev;
 
 #ifdef __cplusplus
+   /* Callers of this talloc-based new need not call delete. It's
+    * easier to just talloc_free 'ctx' (or any of its ancestors). */
+   static void* operator new(size_t size, void *ctx)
+   {
+      void *node;
+
+      node = talloc_size(ctx, size);
+      assert(node != NULL);
+
+      return node;
+   }
+
+   /* If the user *does* call delete, that's OK, we will just
+    * talloc_free in that case. */
+   static void operator delete(void *node)
+   {
+      talloc_free(node);
+   }
+
    exec_node() : next(NULL), prev(NULL)
    {
       /* empty */