tree 01d916cba9ce2fa9ac0f2a3dca686961f7ab4a33
parent f85ff7e64c24031f6d0bd7c9c426b6176cb95160
author Than McIntosh <thanm@google.com> 1490985348 -0400
committer Ian Lance Taylor <iant@golang.org> 1492730951 +0000

compiler: fix for expr sharing introduced by Order_eval::statement.

When processing an expression statement with a top-level call
that returns multiple results, Order_eval::statement can wind up
creating a tree that has multiple references to the same call,
which results in a confusing AST dump. Change the implementation
to avoid introducing this unwanted sharing.

Change-Id: I3781934a9358a3d3361c7baf24d305577c55cd29
Reviewed-on: https://go-review.googlesource.com/39210
Reviewed-by: Ian Lance Taylor <iant@golang.org>