George Karpenkov f28523bb3f [libFuzzer] Generalize the code for getting the previous offset for different architectures
Without this change, tests in coverage.test and dump_coverage.test are
failing on non-x86_64 platforms.
The diff is copied from sanitizer_common library, an alternative would
be to link it together with libFuzzer.

Differential Revision: https://reviews.llvm.org/D53040

llvm-svn: 344104
2018-10-10 00:57:44 +00:00

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# FIXME: Disabled on Windows because -fPIC cannot be used to compile for Windows.
UNSUPPORTED: windows
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/NullDerefTest.cpp -o %t-NullDerefTest
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/DSO1.cpp -fPIC %ld_flags_rpath_so1 -shared -o %dynamiclib1
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/DSO2.cpp -fPIC %ld_flags_rpath_so2 -shared -o %dynamiclib2
RUN: %cpp_compiler -mllvm -use-unknown-locations=Disable %S/DSOTestMain.cpp %S/DSOTestExtra.cpp %ld_flags_rpath_exe1 %ld_flags_rpath_exe2 -o %t-DSOTest
CHECK: COVERAGE:
CHECK: COVERED_FUNC: {{.*}}LLVMFuzzerTestOneInput {{.*}}NullDerefTest.cpp:13
RUN: not %run %t-NullDerefTest -print_coverage=1 2>&1 | FileCheck %s
RUN: %run %t-DSOTest -print_coverage=1 -runs=0 2>&1 | FileCheck %s --check-prefix=DSO
DSO: COVERAGE:
DSO-DAG: COVERED_FUNC:{{.*}}1{{.*}}
DSO-DAG: COVERED_FUNC:{{.*}}2{{.*}}
DSO-DAG: COVERED_FUNC:{{.*}}LLVMFuzzerTestOneInput{{.*}}DSOTestMain
DSO-DAG: UNCOVERED_PC:{{.*}}1
DSO-DAG: UNCOVERED_PC:{{.*}}2
DSO-DAG: UNCOVERED_PC:{{.*}}DSOTestMain