3C output is not cleaned up when a test fails.

[sulekhark]

When a 3C test case passes:

$ ls ../src/clang/test/3C/arrbothmulti1*
../src/clang/test/3C/arrbothmulti1.c

$ ./bin/llvm-lit.py ../src/clang/test/3C/arrbothmulti1.c
-- Testing: 1 tests, single process --
PASS: Clang :: 3C/arrbothmulti1.c (1 of 1)
llvm-lit.py: C:/Users/sukulka/Work/checkedc-clang/src/llvm\utils\lit\lit\llvm\config.py:340: note: using clang: c:\users\sukulka\work\checkedc-clang\build\bin\clang.exe
Testing Time: 1.77s
Expected Passes : 1

$ ls ../src/clang/test/3C/arrbothmulti1*
../src/clang/test/3C/arrbothmulti1.c

When a 3C test case fails:

$ ls ../src/clang/test/3C/arrbothmulti1*
../src/clang/test/3C/arrbothmulti1.c

$ ./bin/llvm-lit.py ../src/clang/test/3C/arrbothmulti1.c
-- Testing: 1 tests, 1 workers --
FAIL: Clang :: 3C/arrbothmulti1.c (1 of 1)
llvm-lit.py: C:\Users\sukulka\Work\Upgrade\build\bin....\src\llvm\utils\lit\lit\llvm\config.py:345: note: using clang: c:\users\sukulka\work\upgrade\build\bin\clang.exe

Failed Tests (1):
Clang :: 3C/arrbothmulti1.c

Testing Time: 0.63s
Failed: 1

$ ls ../src/clang/test/3C/arrbothmulti1*
../src/clang/test/3C/arrbothmulti1.c ../src/clang/test/3C/arrbothmulti1.checkedALL.c ../src/clang/test/3C/arrbothmulti1.checkedNOALL.c

[mattmccutchen-cci]

Thanks for filing an issue. This is a long-standing known problem, currently planned to be addressed as part of #355 in the next few weeks (and then we'll figure out how to get that change quickly into the Microsoft repository). As a workaround, can you run git clean -f -d -x clang/test/3C between test runs?

[sulekhark]

Yes, we can work around this issue.

[mattmccutchen-cci]

Update: #355 will be significantly farther off than I thought, so now I'm planning to fix the temporary file cleanup as part of #412, which I hope will be done within a week.

[mattmccutchen-cci]

While #412 fixed the many tests that used -output-postfix, I noticed that we still have one test that creates a temporary file in clang/test/3C by ad-hoc means: bodiless.c.