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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210325 91177308-0d34-0410-b5e6-96231b3b80d8
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Due to what can only be described as a CRT bug, stdout and amazingly
even stderr are not always flushed upon process termination, especially
when the system is under high threading pressure. I have found two
repros for this:
1) In lib\Support\Threading.cpp, change sys::Mutex to an
std::recursive_mutex and run check-clang. Usually between 30 and 40
tests will fail.
2) Add OutputDebugStrings in code that runs during static initialization
and static shutdown. This will sometimes generate similar failures.
After a substantial amount of troubleshooting and debugging, I found
that I could reproduce this from the command line without running
check-clang. Simply make the mutex change described in #1, then
manually run the following command many times by running it once, then
pressing Up -> Enter very quickly:
D:\src\llvm\build\vs2013\Debug\bin\c-index-test.EXE -cursor-at=D:\src\llvm\tools\clang\test\Index\targeted-preamble.h:2:15 D:\src\llvm\tools\clang\test\Index\targeted-cursor.c -include D:\src\llvm\build\vs2013\tools\clang\test\Index\Output\targeted-cursor.c.tmp.h -Xclang -error-on-deserialized-decl=NestedVar1 -Xclang -error-on-deserialized-decl=TopVar | D:\src\llvm\build\vs2013\Debug\bin\FileCheck.EXE D:\src\llvm\tools\clang\test\Index\targeted-cursor.c -check-prefix=PREAMBLE-CURSOR1
Sporadically they will fail, and attaching a debugger to a failed
instance indicates that stdin of FileCheck.exe is empty.
Note that due to the repro in #2, we can rule out a bug in the STL's
mutex implementation, and instead conclude that this is a real flake in
the windows test harness.
Test Plan:
Without patch: Ran check-clang 10 times and saw over 30 Unexpected failures on every run.
With patch: Ran check-clang 10 times and saw 0 unexpected failures across all runs.
Reviewers: rnk
Differential Revision: http://reviews.llvm.org/D4021
Patch by Zachary Turner!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@210225 91177308-0d34-0410-b5e6-96231b3b80d8
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be flushed at exit.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154254 91177308-0d34-0410-b5e6-96231b3b80d8
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the new Objective-C NSArray/NSDictionary/NSNumber literal syntax.
This introduces a new library, libEdit, which provides a new way to support
migration of code that improves on the original ARC migrator. We now believe
that most of its functionality can be refactored into the existing libraries,
and thus this new library may shortly disappear.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152141 91177308-0d34-0410-b5e6-96231b3b80d8
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prefix to 'clang_'.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134916 91177308-0d34-0410-b5e6-96231b3b80d8
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Solution is to set output stdout to binary mode to prevent newline conversion (\n => \r\n).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134879 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134859 91177308-0d34-0410-b5e6-96231b3b80d8
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This is a new mode of migration, where we avoid modifying the original files but
we emit temporary files instead.
<path> will be used to keep migration process metadata. Currently the temporary files
that are produced are put in the system's temp directory but we can put them
in the <path> if is necessary.
Also introduce new ARC migration functions in libclang whose only purpose,
currently, is to accept <path> and provide pairs of original file/transformed file
to map from the originals to the files after transformations are applied.
Finally introduce the c-arcmt-test utility that exercises the new libclang functions,
update arcmt-test, and add tests for the whole process.
rdar://9735086.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134844 91177308-0d34-0410-b5e6-96231b3b80d8
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