It was bugging me that the default debug_tree of a TEMPLATE_PARM_INDEX
didn't give the name of the template parameter, so I'm adding the
corresponding _DECL to the dump.
commit 56ee7ba41e0a1b6568f157a77775a82230cb8f57
Author: Jason Merrill <ja...@redhat.com>
Date: Fri Oct 21 15:29:04 2016 -0400
* ptree.c (cxx_print_xnode) [TEMPLATE_PARM_INDEX]: Dump the decl.
diff --git a/gcc/cp/ptree.c b/gcc/cp/ptree.c
index 5726f96..e3e5e33 100644
--- a/gcc/cp/ptree.c
+++ b/gcc/cp/ptree.c
@@ -236,6 +236,7 @@ cxx_print_xnode (FILE *file, tree node, int indent)
print_node (file, "chain", TREE_CHAIN (node), indent+4);
break;
case TEMPLATE_PARM_INDEX:
+ print_node (file, "decl", TEMPLATE_PARM_DECL (node), indent+4);
indent_to (file, indent + 3);
fprintf (file, "index %d level %d orig_level %d",
TEMPLATE_PARM_IDX (node), TEMPLATE_PARM_LEVEL (node),
