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cmd/cgo: fix unexpected semicolon in rewritten line

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Followup to CL 157961 and CL 158457.
Finish the list of operators and punctuation
that disable semicolon insertion at end-of-line
The reported case was "(" but "." was also missing.

Fixes #31017.

Change-Id: I0c06443f38dc8250c62e3aadd104abfa0e3be074
Reviewed-on: https://go-review.googlesource.com/c/go/+/174524
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Russ Cox 2019-04-30 14:56:12 -04:00
parent 3e7e2546fc
commit a88cb1d8e1
2 changed files with 34 additions and 13 deletions
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11
misc/cgo/test/issue29781.go
View File

@ -11,7 +11,18 @@ package cgotest
// #define ISSUE29781C 0
import "C"
var issue29781X struct{ X int }
func issue29781F(...int) int { return 0 }
func issue29781G() {
var p *C.char
C.issue29781F(&p, C.ISSUE29781C+1)
C.issue29781F(nil, (C.int)(
0))
C.issue29781F(&p, (C.int)(0))
C.issue29781F(&p, (C.int)(
0))
C.issue29781F(&p, (C.int)(issue29781X.
X))
}

36
src/cmd/cgo/godefs.go
View File

@ -136,21 +136,31 @@ func gofmt(n interface{}) string {
// (due to the printer possibly inserting newlines because of position
// information) operators.
var gofmtLineReplacer = strings.NewReplacer(
"{\n", "{",
",\n", ",",
// Want to replace \n without ; after everything from
// https://golang.org/ref/spec#Operators_and_punctuation
// EXCEPT ++ -- ) ] }
"++\n", "++;",
"--\n", "--;",
"+\n", "+",
"-\n", "-",
"*\n", "*",
"/\n", "/",
"%\n", "%",
"&\n", "&",
"|\n", "|",
"^\n", "^",
"<\n", "<",
">\n", ">",
"=\n", "=",
"+\n", "+ ",
"-\n", "- ",
"*\n", "* ",
"/\n", "/ ",
"%\n", "% ",
"&\n", "& ",
"|\n", "| ",
"^\n", "^ ",
"<\n", "< ",
">\n", "> ",
"=\n", "= ",
"!\n", "! ", // not possible in gofmt today
"(\n", "(",
"[\n", "[", // not possible in gofmt today
"{\n", "{",
",\n", ",",
".\n", ". ",
":\n", ": ", // not possible in gofmt today
"\n", ";",
)