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fmt: scanf behaviour inconsistent with doc specification #10862

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syst3mw0rm opened this issue May 15, 2015 · 4 comments
Closed

fmt: scanf behaviour inconsistent with doc specification #10862

syst3mw0rm opened this issue May 15, 2015 · 4 comments
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Go1.5

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@syst3mw0rm
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fmt doc says: Scanf, Fscanf and Sscanf require newlines in the input to match newlines in the format; the other routines treat newlines as spaces.

The following program spits out error (should not according to doc):

package main

import (
    "fmt"
    "log"
)

func main() {
    var a, b int
    _, err := fmt.Sscanf("1\n2", "%d %d", &a, &b)
    if err == nil {
        log.Fatalf("got - %q, expected - %q", err, "unexpected newline")
    }
}

on commit 335e44d
@ianlancetaylor ianlancetaylor added this to the Go1.5 milestone May 15, 2015
@robpike
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robpike commented Jun 5, 2015

Duplicate of #9459

@robpike robpike closed this as completed Jun 5, 2015
@robpike
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robpike commented Jun 5, 2015

Not a duplicate of #9459, sorry. This is a different issue; fix out for review in https://go-review.googlesource.com/10779

@robpike robpike reopened this Jun 5, 2015
@gopherbot
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CL https://golang.org/cl/10779 mentions this issue.

@gopherbot
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CL https://golang.org/cl/10991 mentions this issue.

@golang golang locked and limited conversation to collaborators Jun 25, 2016
@rsc rsc unassigned robpike Jun 23, 2022
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@syst3mw0rm @ianlancetaylor @robpike @gopherbot