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encoding/json: cannot unmarshal e-notation number into integer type #8460

kortschak opened this issue Aug 2, 2014 · 2 comments


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What does 'go version' print?
go version go1.3 linux/amd64
go version devel +f7e7857afd88 Fri Aug 01 16:45:33 2014 -0700 linux/amd64

What steps reproduce the problem?
If possible, include a link to a program on

1. Run code at

What happened?
Displays errors "json: cannot unmarshal number 1e2 into Go value of type
*int*" for all int types.

What should have happened instead?
No errors should be reported (and correct number should be unmarshaled).

The behaviour clearly is inline with strconv.{ParseInt,ParseUint}, but that does
arguably not agree with the JSON specification - unless int types are determined to not
be numbers.
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Comment 1:

Labels changed: added repo-main, release-go1.4.

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rsc commented Sep 15, 2014

Comment 2:

Status changed to Duplicate.

Merged into issue #5562.

@rsc rsc added this to the Go1.4 milestone Apr 14, 2015
@rsc rsc removed the release-go1.4 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 25, 2016
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4 participants