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Some tests didn't merge stderr with stdout.
Patch by Maxim Kuvyrkov.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@266426 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r266294, as it broke some buildbots again. :/
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@266300 91177308-0d34-0410-b5e6-96231b3b80d8
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Using stderr more uniformily, avoiding potential races when scanning stdout
and stderr output.
Patch by Maxim Kuvyrkov.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@266294 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r262476, as it broken the AArch64 VMA42 buildbot.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@262479 91177308-0d34-0410-b5e6-96231b3b80d8
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by avoiding potential races when scanning stdout and stderr output.
Patch by Maxim Kuvyrkov.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@262476 91177308-0d34-0410-b5e6-96231b3b80d8
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Previously tsan modelled dup2(oldfd, newfd) as write on newfd.
We hit several cases where the write lead to false positives:
1. Some software dups a closed pipe in place of a socket before closing
the socket (to prevent races actually).
2. Some daemons dup /dev/null in place of stdin/stdout.
On the other hand we have not seen cases when write here catches real bugs.
So model dup2 as read on newfd instead.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@240687 91177308-0d34-0410-b5e6-96231b3b80d8
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