base: Fix fdReady() potentially running forever for Windows Char devices.

Authored by nh2 on Sep 14 2017, 8:48 AM.

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rGHC Glasgow Haskell Compiler
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nh2 created this revision.Sep 14 2017, 8:48 AM
nh2 added inline comments.Sep 14 2017, 11:30 AM

I don't think this is correct as is, WaitForSingleObject takes DWORD (unsigned) an below remaining = endTime - now can easily become negative.

Not sure why I didn't get a narrowing warning.

nh2 updated this revision to Diff 13890.Sep 14 2017, 11:45 AM

Fix overflow of remaining when calling WaitForSingleObject

nh2 marked an inline comment as done.Sep 14 2017, 11:45 AM
nh2 added a comment.Sep 14 2017, 12:57 PM

Not sure why I didn't get a narrowing warning.

Because apparently none of -Wall, -Wextra or -pedantic imply -Wconversion or its subset -Wsign-conversion in GCC:

bgamari accepted this revision.Sep 14 2017, 2:51 PM

Looks right to me.

This revision is now accepted and ready to land.Sep 14 2017, 2:51 PM
This revision was automatically updated to reflect the committed changes.