D48254.diff
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	diff --git a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_parser.c b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_parser.c
	--- a/cddl/contrib/opensolaris/lib/libdtrace/common/dt_parser.c
	+++ b/cddl/contrib/opensolaris/lib/libdtrace/common/dt_parser.c
	@@ -1130,6 +1130,29 @@
	lp_is_void = ctf_type_encoding(lfp, lref, &e) == 0 && IS_VOID(e);
	rp_is_void = ctf_type_encoding(rfp, rref, &e) == 0 && IS_VOID(e);

	+ /*
	+ * Let a pointer to a forward declaration be compatible with a pointer
	+ * to a struct or union of the same name.
	+ */
	+ if (lkind == CTF_K_POINTER && rkind == CTF_K_POINTER) {
	+ int lrkind, rrkind;
	+
	+ lrkind = ctf_type_kind(lfp, lref);
	+ rrkind = ctf_type_kind(rfp, rref);
	+ if (lrkind == CTF_K_FORWARD \|\| rrkind == CTF_K_FORWARD) {
	+ const char lname, rname;
	+ char ln[DT_TYPE_NAMELEN], rn[DT_TYPE_NAMELEN];
	+
	+ lname = ctf_type_name(lfp, lref, ln, sizeof (ln));
	+ rname = ctf_type_name(rfp, rref, rn, sizeof (rn));
	+ if (lname != NULL && rname != NULL &&
	+ strcmp(lname, rname) == 0) {
	+ lp_is_void = lrkind == CTF_K_FORWARD;
	+ rp_is_void = rrkind == CTF_K_FORWARD;
	+ }
	+ }
	+ }
	+
	/*
	* The types are compatible if both are pointers to the same type, or
	* if either pointer is a void pointer. If they are compatible, set