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Summary: there is an ongoing work on interchangeable custom mutators (https://github.com/google/clusterfuzz/pull/1333/files#r367706283) and having some sort of signalling from libFuzzer that it has loaded a custom mutator would be helpful. The initial idea was to make the mutator to print something, but given the anticipated variety of different mutators, it does not seem possible to make all of them print the same message to signal their execution. Reviewers: kcc, metzman Reviewed By: metzman Subscribers: #sanitizers, llvm-commits Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D73136
14 lines
828 B
Plaintext
14 lines
828 B
Plaintext
RUN: %cpp_compiler %S/CustomMutatorTest.cpp -o %t-CustomMutatorTest
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RUN: not %run %t-CustomMutatorTest 2>&1 | FileCheck %s --check-prefix=LLVMFuzzerCustomMutator
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LLVMFuzzerCustomMutator: INFO: found LLVMFuzzerCustomMutator
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LLVMFuzzerCustomMutator: In LLVMFuzzerCustomMutator
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LLVMFuzzerCustomMutator: {{.*}} lim: 4096 {{.*}}
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LLVMFuzzerCustomMutator: BINGO
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# len_control is disabled for custom mutators by default, test that it can be enabled.
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RUN: not %run %t-CustomMutatorTest -len_control=100 2>&1 | FileCheck %s --check-prefix=LLVMFuzzerCustomMutatorWithLenControl
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LLVMFuzzerCustomMutatorWithLenControl: INFO: found LLVMFuzzerCustomMutator
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LLVMFuzzerCustomMutatorWithLenControl: In LLVMFuzzerCustomMutator
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LLVMFuzzerCustomMutatorWithLenControl: {{.*}} lim: {{[1-9][0-9]?}} {{.*}}
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LLVMFuzzerCustomMutatorWithLenControl: BINGO
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