pkg/compiler: fix len of parent template struct

Consider the following example:

type len_templ1[DATA1, DATA2] {
	data	DATA1
	inner	len_temp2[DATA2]
}

type len_temp2[DATA] {
	data	DATA
	len	len[len_templ1, int8]
}

Here len refers to a parent struct, but the struct is a template,
so it's actual name is something like "len_templ1[int8, int16]".
Currently this does not work as compiler barks at incorrect
len target.

Make this work.

1 files changed, 12 insertions, 0 deletions

diff --git a/sys/test/test.txt b/sys/test/test.txt
index f8a1e4fba..051c17ce6 100644
--- a/sys/test/test.txt
+++ b/sys/test/test.txt
@@ -338,6 +338,18 @@ syz_length_parent2_struct {
 	f2	len[syz_length_parent2_struct, int8]
 }
 
+type len_templ1[DATA1, DATA2] {
+	data	DATA1
+	inner	len_temp2[DATA2]
+}
+
+type len_temp2[DATA] {
+	data	DATA
+	len	len[len_templ1, int8]
+}
+
+syz_test$length23(a ptr[in, len_templ1[int8, int16]])
+
 # Big endian
 
 syz_test$end0(a0 ptr[in, syz_end_int_struct])