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cmd/compile: record original and absolute file names for line directives

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Also, with this change, error locations don't print absolute positions
in [] brackets following positions relative to line directives. To get
the absolute positions as well, specify the -L flag.

Fixes #22660.

Change-Id: I9ecfa254f053defba9c802222874155fa12fee2c
Reviewed-on: https://go-review.googlesource.com/77090
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
griesemer 2017-11-10 11:38:51 -08:00 • committed by Robert Griesemer
parent 2c00dea18b
commit ca2a886cba
12 changed files with 83 additions and 27 deletions
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7
src/cmd/compile/internal/syntax/parser.go
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@ -80,11 +80,12 @@ func (p *parser) updateBase(line, col uint, text string) {
p.error_at(p.pos_at(line, col+uint(i+1)), "invalid line number: "+nstr)
return
}
absFile := text[:i]
filename := text[:i]
absFilename := filename
if p.fileh != nil {
absFile = p.fileh(absFile)
absFilename = p.fileh(filename)
}
p.base = src.NewLinePragmaBase(src.MakePos(p.base.Pos().Base(), line, col), absFile, uint(n))
p.base = src.NewLinePragmaBase(src.MakePos(p.base.Pos().Base(), line, col), filename, absFilename, uint(n))
}
func (p *parser) got(tok token) bool {