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cmd/compile: fix lazy loading in reader2

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Calling reader2.obj fully loads the referenced object, which is
necessary in general; but for reading the package index, we just need
to setup the name->index mapping. This CL adds this, so that lazy
loading works as intended.

Change-Id: Ie51d59e2247d99b46f9dc69fba7ce89e2584b7c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/348011
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
This commit is contained in:
Matthew Dempsky 2021-09-07 10:51:14 -07:00
parent 81188661f1
commit e581ec07ee
1 changed files with 6 additions and 1 deletions
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7
src/cmd/compile/internal/noder/reader2.go
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@ -43,7 +43,12 @@ func readPackage2(check *types2.Checker, imports map[string]*types2.Package, inp
r.bool() // has init
for i, n := 0, r.len(); i < n; i++ {
r.obj()
// As if r.obj(), but avoiding the Scope.Lookup call,
// to avoid eager loading of imports.
r.sync(syncObject)
assert(!r.bool())
r.p.objIdx(r.reloc(relocObj))
assert(r.len() == 0)
}
r.sync(syncEOF)