Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/compile/internal/syntax: add PosBase.Trimmed

Browse source 
With types2, some syntax.PosBases need to be constructed from export
data, which must only contain "trimmed" filenames (i.e., that they've
already been made absolute and undergone -trimpath processing).
However, it's not safe to apply trimming to a filename multiple times,
and in general we can't distinguish trimmed from untrimmed filenames.

This CL resolves this by adding a PosBase.Trimmed boolean so we can
distinguish whether the associated filename has been trimmed yet. This
is a bit hacky, but is the least bad solution I've come up with so
far.

This unblocks enabling -G=3 by default.

Change-Id: I7383becfb704680a36f7603e3246af38b21f100b
Reviewed-on: https://go-review.googlesource.com/c/go/+/343731
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2021-08-19 15:52:53 -07:00
parent 5045477be8
commit ab9aaf46ee
8 changed files with 48 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/cmd/compile/internal/noder/reader.go
View file

@ -194,16 +194,15 @@ func (pr *pkgReader) posBaseIdx(idx int) *src.PosBase {
r := pr.newReader(relocPosBase, idx, syncPosBase)
var b *src.PosBase
fn := r.string()
absfn := r.string()
filename := r.string()
if r.bool() {
b = src.NewFileBase(fn, absfn)
b = src.NewFileBase(filename, filename)
} else {
pos := r.pos0()
line := r.uint()
col := r.uint()
b = src.NewLinePragmaBase(pos, fn, absfn, line, col)
b = src.NewLinePragmaBase(pos, filename, filename, line, col)
}
pr.posBases[idx] = b