Issue #12644 has been reported by Dvis Mosns.

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Bug #12644: Support debug build on Windows with MSVC
https://bugs.ruby-lang.org/issues/12644

* Author: Dvis Mosns
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.4.0dev (2016-08-01 trunk 55789) [x64-mingw32]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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When building debug build with MSVC (`-MDd` flag) then it will be linked to `ucrtbased.dll` where `_isatty` function obviously differs.

I've attached a patch which fixes this so that `__pioinfo` will be found for both debug and non-debug builds (x86 and x64)

Anyway I really really don't like this and I think Ruby should keep it's own fd <=> handle mapping and not use this hack, but for now this works until `_isatty` changes.



---Files--------------------------------
0001-Support-debug-build-on-Windows-with-MSVC.patch (4.04 KB)


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