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cmd/compile/internal/syntax: don't record semi position if there's none

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Fixes #23406.

Change-Id: Ief04e20357c9ca03a5e496f1742428394c8ee658
Reviewed-on: https://go-review.googlesource.com/87317
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Robert Griesemer 2018-01-10 17:14:20 -08:00
parent 40a17eed93
commit 08e342d62c
1 changed files with 7 additions and 3 deletions
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10
src/cmd/compile/internal/syntax/parser.go
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@ -1768,9 +1768,13 @@ func (p *parser) header(keyword token) (init SimpleStmt, cond Expr, post SimpleS
lit string // valid if pos.IsKnown()
}
if p.tok != _Lbrace {
semi.pos = p.pos()
semi.lit = p.lit
p.want(_Semi)
if p.tok == _Semi {
semi.pos = p.pos()
semi.lit = p.lit
p.next()
} else {
p.want(_Semi)
}
if keyword == _For {
if p.tok != _Semi {
if p.tok == _Lbrace {