Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.9.3 linux/amd64

Does this issue reproduce with the latest release?

1.9.3 is the latest version.

What operating system and processor architecture are you using (go env)?

amd64
linux

What did you do?

Try building this program:

1 package foo
2
3 import (
4 )
5
6 type Foo struct{
7 A int
8 B int
9 C interface{}
10 }
11
12 type Bar struct{
13 A string
14 }
15
16 func main() {
17 f := Foo{
18 1,
19 2,
20 3,
21 Bar{"hello"},
22 }
23 }

What did you expect to see?

An error message that leads me straight to the problem (i.e. that the Foo initialization has the wrong number of args).

What did you see instead?

./test.go:21:6: too many values in struct initializer

This is ambiguous, as it could apply to Foo or Bar. I had a real conundrum with a much larger struct whose definition was in another file, and two of us spent a long time trying to figure out what was wrong with Bar before realizing that it was embedded in a larger struct, and coincidentally on the last line. Could the error message be changed to say the following?
./test.go:21:6: too many values in initializer of struct Foo

Similarly, if you delete lines 19-20, you get:
./test.go:19:6: too few values in struct initializer

which has the same problem.