pkg/compiler, prog: fix template parent lens

It's possible that a struct can have 2+ parents,
which is the same template (differs only by arguments).
See the new test case.
Support such case.

1 files changed, 16 insertions, 0 deletions

diff --git a/sys/test/test.txt b/sys/test/test.txt
index 051c17ce6..b5b1fecf0 100644
--- a/sys/test/test.txt
+++ b/sys/test/test.txt
@@ -350,6 +350,22 @@ type len_temp2[DATA] {
 
 syz_test$length23(a ptr[in, len_templ1[int8, int16]])
 
+type len_temp3[DATA] {
+	f1	DATA
+	f2	len_nontemp4
+}
+
+len_nontemp4 {
+	f1	len[len_temp3, int32]
+}
+
+len_nontemp5 {
+	f1	len_temp3[int8]
+	f2	len_temp3[int64]
+}
+
+syz_test$length24(a ptr[in, len_nontemp5])
+
 # Big endian
 
 syz_test$end0(a0 ptr[in, syz_end_int_struct])