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cmd/compile: remove parser lineno hack for issue #13267

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After golang.org/cl/19652 removed the bizarre lexlineno{++,--}
statements for parsing canned imports, this hack for #13267 is no
longer necessary:

    $ echo -n 0 > /tmp/0.go
    $ go tool compile /tmp/0.go
    /tmp/0.go:1: syntax error: package statement must be first

Apparently setting lexlineno to 2 while parsing the canned imports
caused prevlineno and lineno to also be set to 2.  After we finished
parsing imports and restored lexlineno to 1, since "package" is the
first token in a source file, we'll have fixed lineno = 1, but
prevlineno was still set to 2.

Change-Id: Ibcc49fe3402264819b9abb53505631f7a0ad4a36
Reviewed-on: https://go-review.googlesource.com/19859
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Matthew Dempsky 2016-02-23 15:29:19 -08:00
parent e360f7c4db
commit 1e4e09612c
1 changed files with 2 additions and 4 deletions
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6
src/cmd/compile/internal/gc/parser.go
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@ -280,13 +280,11 @@ func (p *parser) package_() {
defer p.trace("package_")() defer p.trace("package_")()
} }
if p.got(LPACKAGE) { if !p.got(LPACKAGE) {
mkpackage(p.sym().Name)
} else {
prevlineno = lineno // see issue #13267
p.syntax_error("package statement must be first") p.syntax_error("package statement must be first")
errorexit() errorexit()
} }
mkpackage(p.sym().Name)
} }
// ImportDecl = "import" ( ImportSpec | "(" { ImportSpec ";" } ")" ) . // ImportDecl = "import" ( ImportSpec | "(" { ImportSpec ";" } ")" ) .