[libFuzzer] Can't use wildcard ? for Windows.

[mpividori]

Summary

Command prompt doesn't expand wildcards. So we can not use ?.

[kcc]

LGTM
last time you assured me that we had only one test that required bash...
The change itself is kind-of-ok, but we don't have a way to keep windows from regressing,.
So windows will keep breaking.

lib/Fuzzer/test/merge.test

 CHECK: BINGO
 
-RUN: rm -rf  %tmp/T1 %tmp/T2
-RUN: mkdir -p %tmp/T1 %tmp/T2
-RUN: echo F..... > %tmp/T1/1
-RUN: echo .U.... > %tmp/T1/2
-RUN: echo ..Z... > %tmp/T1/3
+RUN: rm -rf %tmp/T0 %tmp/T1 %tmp/T2
+RUN: mkdir -p %tmp/T0 %tmp/T1 %tmp/T2
+RUN: echo F..... > %tmp/T0/1
+RUN: echo .U.... > %tmp/T0/2
+RUN: echo ..Z... > %tmp/T0/3
 
 # T1 has 3 elements, T2 is empty.
+RUN: cp %tmp/T0/* %tmp/T1/
 RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK1
 CHECK1: MERGE-OUTER: 3 files, 3 in the initial corpus
 CHECK1: MERGE-OUTER: 0 new files with 0 new features added
 
 RUN: echo ...Z.. > %tmp/T2/1
 RUN: echo ....E. > %tmp/T2/2
 RUN: echo .....R > %tmp/T2/3
 RUN: echo F..... > %tmp/T2/a
 RUN: echo .U.... > %tmp/T2/b
 RUN: echo ..Z... > %tmp/T2/c
 
 # T1 has 3 elements, T2 has 6 elements, only 3 are new.
 RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK2
 CHECK2: MERGE-OUTER: 9 files, 3 in the initial corpus
 CHECK2: MERGE-OUTER: 3 new files with 3 new features added
 
 # Now, T1 has 6 units and T2 has no new interesting units.
 RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=CHECK3
 CHECK3: MERGE-OUTER: 12 files, 6 in the initial corpus
 CHECK3: MERGE-OUTER: 0 new files with 0 new features added
 
 # Check that we respect max_len during the merge and don't crash.
-RUN: rm %tmp/T1/??*
+RUN: rm %tmp/T1/*
+RUN: cp %tmp/T0/* %tmp/T1/
 RUN: echo looooooooong > %tmp/T2/looooooooong
 RUN: LLVMFuzzer-FullCoverageSetTest         -merge=1 %tmp/T1 %tmp/T2 -max_len=6 2>&1 | FileCheck %s --check-prefix=MAX_LEN
 MAX_LEN: MERGE-OUTER: 3 new files
 
 # Check that merge tolerates failures.
-RUN: rm %tmp/T1/??*
+RUN: rm %tmp/T1/*
+RUN: cp %tmp/T0/* %tmp/T1/
 RUN: echo 'FUZZER' > %tmp/T2/FUZZER
 RUN: LLVMFuzzer-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=MERGE_WITH_CRASH
 MERGE_WITH_CRASH: MERGE-OUTER: succesfull in 2 attempt(s)
 MERGE_WITH_CRASH: MERGE-OUTER: 3 new files
 
 # Check that we actually limit the size with max_len
 RUN: LLVMFuzzer-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2  -max_len=5 2>&1 | FileCheck %s --check-prefix=MERGE_LEN5
 MERGE_LEN5: MERGE-OUTER: succesfull in 1 attempt(s)
 
 RUN: rm -rf  %tmp/T1/* %tmp/T2/*
 RUN: not LLVMFuzzer-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=EMPTY
 EMPTY: MERGE-OUTER: zero succesfull attempts, exiting