IO#write: return early if slice is empty #6269
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RX14
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Jun 26, 2018
| @@ -14,13 +14,14 @@ module Crystal::System::FileDescriptor | |||
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| private def unbuffered_write(slice : Bytes) | |||
| loop do | |||
| return if slice.empty? | |||
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Sija
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Jun 26, 2018
| wait_writable | ||
| return if slice.empty? | ||
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| begin |
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Because the ensure must not run if the slice is empty. It's pointless to do anything at all if the slice is empty.
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Yeah, I meant that ensure could be attached to the loop instead, like it was before.
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It was attached to the def
RX14
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Jun 26, 2018
jhass
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Jun 26, 2018
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Fixes #6268
Writing an empty slice should do nothing, so this PR adds this check to return early in that case. Fixes that case for OpenSSL socket, but also for others (no tests included because it's a bit hard to test, but the change isn't that complex).