[libFuzzer][Windows] Reenable passing tests

[metzman]

Summary

Enable tests that were previously disabled because they didn't work on
Windows.

[metzman]

@morehouse
Please take a look when you get a chance.
All of these tests pass on Win without takinn long.
I'd like to reenable them.

[morehouse]

LGTM

compiler-rt/test/fuzzer/cxxstring.test

-UNSUPPORTED: windows,freebsd
+UNSUPPORTED: freebsd
 
 RUN: %cpp_compiler %S/CxxStringEqTest.cpp -o %t-CxxStringEqTest
 
 RUN: not %run %t-CxxStringEqTest -seed=1 -runs=1000000 2>&1 | FileCheck %s
 CHECK: BINGO

compiler-rt/test/fuzzer/minimize_crash.test

-UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefTest.cpp -o %t-NullDerefTest
 RUN: %cpp_compiler %S/SingleByteInputTest.cpp -o %t-SingleByteInputTest
 RUN: mkdir -p %t.dir
 
 RUN: echo 'Hi!rv349f34t3gg' > %t.dir/not_minimal_crash
 RUN: %run %t-NullDerefTest -minimize_crash=1 %t.dir/not_minimal_crash -max_total_time=2 2>&1 | FileCheck %s
 CHECK: CRASH_MIN: failed to minimize beyond {{.*}}minimized-from{{.*}} (3 bytes), exiting
 RUN: %run %t-NullDerefTest -minimize_crash=1 %t.dir/not_minimal_crash -max_total_time=2 -exact_artifact_path=%t.exact_minimized_path 2>&1 | FileCheck %s --check-prefix=CHECK_EXACT

compiler-rt/test/fuzzer/minimize_two_crashes.test

 # Test that the minimizer stops when it sees a different bug.
-UNSUPPORTED: freebsd,windows
+UNSUPPORTED: freebsd
 
 # TODO: Find out why test fails on Darwin with -O2.
 RUN: %cpp_compiler -O0 %S/TwoDifferentBugsTest.cpp -o %t-TwoDifferentBugsTest
 
 RUN: rm -rf %t && mkdir %t
 RUN: echo H12345678901234667888090 > %t/long_crash
 RUN: %env_asan_opts=dedup_token_length=3 %run %t-TwoDifferentBugsTest -seed=1 -minimize_crash=1 %t/long_crash -exact_artifact_path=%t/result 2>&1 | FileCheck %s
 

compiler-rt/test/fuzzer/null-deref-on-empty.test

-UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefOnEmptyTest.cpp -o %t-NullDerefOnEmptyTest
 
 RUN: not %run %t-NullDerefOnEmptyTest -print_final_stats=1 2>&1 | FileCheck %s --check-prefix=NULL_DEREF_ON_EMPTY
 NULL_DEREF_ON_EMPTY: stat::number_of_executed_units:

compiler-rt/test/fuzzer/null-deref.test

-UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefTest.cpp -o %t-NullDerefTest
 
 RUN: not %run %t-NullDerefTest                  2>&1 | FileCheck %s --check-prefix=NullDerefTest
 RUN: not %run %t-NullDerefTest -close_fd_mask=3 2>&1 | FileCheck %s --check-prefix=NullDerefTest
 NullDerefTest: ERROR: AddressSanitizer: {{SEGV|access-violation}} on unknown address
 NullDerefTest: Test unit written to ./crash-
 RUN: not %run %t-NullDerefTest  -artifact_prefix=ZZZ 2>&1 | FileCheck %s --check-prefix=NullDerefTestPrefix
 NullDerefTestPrefix: Test unit written to ZZZcrash-
 RUN: not %run %t-NullDerefTest  -artifact_prefix=ZZZ -exact_artifact_path=FOOBAR 2>&1 | FileCheck %s --check-prefix=NullDerefTestExactPath
 NullDerefTestExactPath: Test unit written to FOOBAR

compiler-rt/test/fuzzer/value-profile-cmp.test

-# FIXME: Disabled on Windows because of hangs.
-UNSUPPORTED: windows, ios
+UNSUPPORTED: ios
 CHECK: BINGO
 RUN: %cpp_compiler %S/SimpleCmpTest.cpp -o %t-SimpleCmpTest
 RUN: not %run %t-SimpleCmpTest -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s

compiler-rt/test/fuzzer/value-profile-cmp4.test

-# FIXME: Disabled on Windows because of hangs.
-UNSUPPORTED: windows
 CHECK: BINGO
 RUN: %cpp_compiler %S/AbsNegAndConstant64Test.cpp -o %t-AbsNegAndConstant64Test
 RUN: not %run %t-AbsNegAndConstant64Test -seed=1 -use_cmp=0 -use_value_profile=1 -runs=100000000 2>&1 | FileCheck %s

compiler-rt/test/fuzzer/value-profile-load.test

-# FIXME: Disabled on Windows because of hangs.
-UNSUPPORTED: windows
 CHECK: AddressSanitizer: global-buffer-overflow
 RUN: %cpp_compiler %S/LoadTest.cpp -fsanitize-coverage=trace-gep -o %t-LoadTest
 RUN: not %run %t-LoadTest -seed=2 -use_cmp=0 -use_value_profile=1 -runs=20000000 2>&1 | FileCheck %s