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When you run the local simulation of an appengine on windows,
the mmap_windows.go variant is selected, which requiring an import of unsafe.

Since unsafe is forbidden on appengine, we get an compile time error message looking like this:

The Go application could not be built. (Executed command: C:\go_appengine\goroot\bin\go-app-builder.exe -app_base C:\goroot\src\appentry -arch 6 -dynamic -goroot C:\go_appengine\goroot -nobuild_files ^^$ -unsafe -gopath C:\goroot\ -print_extras_hash main.go) 2016/12/05 11:39:12 go-app-builder: Failed parsing input: parser: bad import "unsafe" in github.com\oschwald\maxminddb-golang\decoder.go from GOPATH

So we fix this by putting an explicit build tag which excludes appengine on windows there.

When you run the local simulation of an appengine on windows,
the mmap_windows.go variant is selected, which requiring an import of unsafe.

Since unsafe is forbidden on appengine, we get an compile time error message looking like this:

The Go application could not be built. (Executed command: C:\go_appengine\goroot\bin\go-app-builder.exe -app_base C:\goroot\src<redacted>\appentry -arch 6 -dynamic -goroot C:\go_appengine\goroot -nobuild_files ^^$ -unsafe -gopath C:\goroot\ -print_extras_hash main.go) 2016/12/05 11:39:12 go-app-builder: Failed parsing input: parser: bad import "unsafe" in github.com\oschwald\maxminddb-golang\decoder.go from GOPATH

So we fix this by putting an explicit build tag which excludes appengine on windows there.
@nightlyone
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Hi @oschwald please take a look and integrate this oneliner soonish.

It helps all people developing for appengine on their windows machines.

@oschwald oschwald merged commit 6a69cca into oschwald:master Dec 5, 2016
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oschwald commented Dec 5, 2016

Thanks!

@nightlyone nightlyone deleted the patch-1 branch October 20, 2019 14:31
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2 participants