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, 14 insertions, 0 deletions

diff --git a/pkg/compiler/testdata/all.txt b/pkg/compiler/testdata/all.txt
index 88e45dba4..8bd81c7d4 100644
--- a/pkg/compiler/testdata/all.txt
+++ b/pkg/compiler/testdata/all.txt
@@ -29,6 +29,20 @@ proc_struct1 {
 	f1	proc[C0, 8, int8]
 }
 
+# Len/bytesize types.
+
+type len_templ1[DATA1, DATA2] {
+	data	DATA1
+	inner	len_temp2[DATA2]
+}
+
+type len_temp2[DATA] {
+	data	DATA
+	len	len[len_templ1, int8]
+}
+
+foo$len_templ(a ptr[in, len_templ1[int8, int16]])
+
 # Void type.
 
 void0 {