[llvm] r292862 - [sanitizer-coverage] emit __sanitizer_cov_trace_pc_guard w/o a preceding 'if' by default. Update the docs, also add deprecation notes around other parts of sanitizer coverage

Tue Jan 24 15:48:26 PST 2017

turns out one of the x86 bots is failing too (gcc build fails, clang build
passes).
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/721/steps/check-asan%20in%20gcc%20build/logs/stdio
This gives me a way to reproduce, looking.

On Tue, Jan 24, 2017 at 1:43 PM, Eric Christopher <echristo at gmail.com>
wrote:

>
>
> On Tue, Jan 24, 2017 at 1:37 PM Kostya Serebryany <kcc at google.com> wrote:
>
>> On Tue, Jan 24, 2017 at 1:34 PM, Eric Christopher <echristo at gmail.com>
>> wrote:
>>
>>
>>
>> On Tue, Jan 24, 2017 at 1:23 PM Kostya Serebryany <kcc at google.com> wrote:
>>
>> On Tue, Jan 24, 2017 at 1:17 PM, Eric Christopher <echristo at gmail.com>
>> wrote:
>>
>>
>>
>> On Tue, Jan 24, 2017 at 11:49 AM Kostya Serebryany <kcc at google.com>
>> wrote:
>>
>> On Tue, Jan 24, 2017 at 11:45 AM, Eric Christopher <echristo at gmail.com>
>> wrote:
>>
>> This seems problematic in general - we have a bot that is failing due to
>> a particular test. Is this patch necessary for correctness somewhere else?
>>
>>
>> Correctness -- no. Performance -- yes, and in some cases very significant.
>>
>>
>> OK. Thanks.
>>
>>
>>
>>
>> Can it be reverted until we can figure out what's going on?
>>
>>
>> Sure we can revert it, but who is going to analyze the problem and how
>> soon?
>>
>>
>> I'm hoping someone at IBM can take a look at it. I've got limited ability
>> to debug it myself at the moment.
>>
>> Kit: Would you mind terribly?
>> Kostya: It might be nice to revert in the mean time if you don't mind?
>>
>>
>> I do mind, sorry.
>> Again, this functionality is not used by anyone on PPC (afaict) but is
>> important for libFuzzer users on x86 side.
>>
>>
>> I believe this could be causing problems not just in libFuzzer and so
>> affect anyone trying to use the sanitizer on ppc at all?
>>
>>
>> I doubt so. This change affects sanitizer coverage (
>> https://clang.llvm.org/docs/SanitizerCoverage.html),
>> which is usually used together with *san and libFuzzer.
>>
>
> OK. Thanks for the clarification.
>
> In general, we have a revert first policy and so this should probably have
> fallen under there without letting people know what the plan was for making
> sure the bots come back - it's important that we continue to get bot
> testing for asan in general.
>
> Thanks!
>
> -eric
>
>
>>
>>
>>
>> If not, can you explain the scope of this a bit better - especially as
>> it's now a flaky failure?
>>
>> -eric
>>
>>
>>
>>
>>
>> Thanks!
>>
>> -eric
>>
>>
>> Note that the functionality tested in this test is not the core asan, but
>> the coverage instrumentation used by libFuzzer,
>> and afaict there are no users of libFuzzer on PPC, so we can just disable
>> the test on PPC and no users will be harmed.
>>
>>
>>
>> -eric
>>
>> On Tue, Jan 24, 2017 at 11:29 AM Kostya Serebryany via llvm-commits <
>> llvm-commits at lists.llvm.org> wrote:
>>
>> Hi Bill,
>>
>> thanks for the report.
>> Unfortunately, I don't have anyone working on the PPC side at the moment
>> and the test passes on x86.
>> So, the only thing I can propose now is to disable this test on PPC.
>> (Maybe it's not that bad, I was going to kill at least some of the
>> related code this year).
>>
>> --kcc
>>
>> On Tue, Jan 24, 2017 at 8:44 AM, Bill Seurer <seurer at linux.vnet.ibm.com>
>> wrote:
>>
>> This broke the powerpc sanitizers.
>>
>> updatellvm 292861
>> ninja
>> ninja check-asan
>> Testing Time: 29.65s
>>   Expected Passes    : 457
>>   Expected Failures  : 1
>>   Unsupported Tests  : 157
>>
>> updatellvm 292862
>> ninja
>> ninja check-asan
>>
>> FAIL: AddressSanitizer-powerpc64le-linux :: TestCases/Posix/coverage-direct.cc
>> (528 of 615)
>> ******************** TEST 'AddressSanitizer-powerpc64le-linux ::
>> TestCases/Posix/coverage-direct.cc' FAILED ********************
>> Script:
>> --
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64
>> -fsanitize-coverage=func -DSHARED /home/seurer/llvm/llvm-test2/
>> projects/compiler-rt/test/asan/TestCases/Posix/coverage-direct.cc
>> -shared -o /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).dynamic.so
>> -fPIC
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64
>> -fsanitize-coverage=func /home/seurer/llvm/llvm-test2/
>> projects/compiler-rt/test/asan/TestCases/Posix/coverage-direct.cc -ldl
>> -o /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> rm -rf /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal
>> env ASAN_OPTIONS=coverage=1:coverage_direct=0:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/*.sancov
>> >/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal/out.txt
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/direct
>> env ASAN_OPTIONS=coverage=1:coverage_direct=1:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> cd /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py rawunpack *.sancov.raw
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print *.sancov >out.txt
>> cd ../..
>> diff -u coverage-direct/normal/out.txt coverage-direct/direct/out.txt
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64 -fsanitize-coverage=bb
>> -DSHARED /home/seurer/llvm/llvm-test2/projects/compiler-rt/test/
>> asan/TestCases/Posix/coverage-direct.cc -shared -o
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).dynamic.so
>> -fPIC
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64 -fsanitize-coverage=bb
>> -DSO_DIR=\"/home/seurer/llvm/build/llvm-test2/projects/
>> compiler-rt/test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output\"
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/test/
>> asan/TestCases/Posix/coverage-direct.cc -ldl -o
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> rm -rf /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal
>> env ASAN_OPTIONS=coverage=1:coverage_direct=0:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/*.sancov
>> >/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal/out.txt
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/direct
>> env ASAN_OPTIONS=coverage=1:coverage_direct=1:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> cd /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py rawunpack *.sancov.raw
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print *.sancov >out.txt
>> cd ../..
>> diff -u coverage-direct/normal/out.txt coverage-direct/direct/out.txt
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64
>> -fsanitize-coverage=edge -DSHARED /home/seurer/llvm/llvm-test2/
>> projects/compiler-rt/test/asan/TestCases/Posix/coverage-direct.cc
>> -shared -o /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).dynamic.so
>> -fPIC
>> /home/seurer/llvm/build/llvm-test2/./bin/clang --driver-mode=g++
>> -fsanitize=address -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer
>> -fno-optimize-sibling-calls -gline-tables-only -m64
>> -fsanitize-coverage=edge -DSO_DIR=\"/home/seurer/llvm/
>> build/llvm-test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output\"
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/test/
>> asan/TestCases/Posix/coverage-direct.cc -ldl -o
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> rm -rf /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal
>> env ASAN_OPTIONS=coverage=1:coverage_direct=0:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/*.sancov
>> >/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/normal/out.txt
>> mkdir -p /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/
>> test/asan/POWERPC64LELinuxConfig/TestCases/Posix/Output/
>> coverage-direct/direct
>> env ASAN_OPTIONS=coverage=1:coverage_direct=1:coverage_
>> dir=/home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct:verbosity=1
>>
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/lib$(basename
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct.cc.tmp).
>> dynamic.so
>> cd /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/direct
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py rawunpack *.sancov.raw
>> /usr/bin/python2.7 /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py print *.sancov >out.txt
>> cd ../..
>> diff -u coverage-direct/normal/out.txt coverage-direct/direct/out.txt
>> --
>> Exit Code: 1
>>
>> Command Output (stdout):
>> --
>> bar
>> bar
>> bar
>> bar
>> --- coverage-direct/normal/out.txt      2017-01-24 10:20:41.258917000
>> -0600
>> +++ coverage-direct/direct/out.txt      2017-01-24 10:20:41.638917000
>> -0600
>> @@ -1 +1,2 @@
>>  0x10128bb0
>> +0x10128bb0
>>
>> --
>> Command Output (stderr):
>> --
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_printf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_sprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_snprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_fprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_vprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_vsprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_vsnprintf'
>> ==18701==AddressSanitizer: failed to intercept '__isoc99_vfprintf'
>> ==18701==AddressSanitizer: libc interceptors initialized
>> || `[0x0a0000000000, 0x3fffffffffff]` || HighMem    ||
>> || `[0x034000000000, 0x09ffffffffff]` || HighShadow ||
>> || `[0x024000000000, 0x033fffffffff]` || ShadowGap  ||
>> || `[0x020000000000, 0x023fffffffff]` || LowShadow  ||
>> || `[0x000000000000, 0x01ffffffffff]` || LowMem     ||
>> MemToShadow(shadow): 0x024000000000 0x0247ffffffff 0x026800000000
>> 0x033fffffffff
>> redzone=16
>> max_redzone=2048
>> quarantine_size_mb=256M
>> thread_local_quarantine_size_kb=1024K
>> malloc_context_size=30
>> SHADOW_SCALE: 3
>> SHADOW_GRANULARITY: 8
>> SHADOW_OFFSET: 0x20000000000
>> ==18701==Installed the sigaction for signal 11
>> ==18701==Installed the sigaction for signal 7
>> ==18701==Installed the sigaction for signal 8
>> ==18701==T0: stack [0x3fffdd8c0000,0x3fffde0c0000) size 0x800000;
>> local=0x3fffde0ba450
>> ==18701==AddressSanitizer Init done
>> PID: 18701
>> ==18701== CovDump: /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/
>> coverage-direct.cc.tmp.18701.sancov: 1 PCs written
>> ==18701== CovDump: /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/libcoverage-direct.cc.tmp.
>> dynamic.so.18701.sancov: 1 PCs written
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal/
>> coverage-direct.cc.tmp.18701.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal/
>> libcoverage-direct.cc.tmp.dynamic.so.18701.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: 2 files merged; 2 PCs total
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_printf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_sprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_snprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_fprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_vprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_vsprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_vsnprintf'
>> ==19909==AddressSanitizer: failed to intercept '__isoc99_vfprintf'
>> ==19909==AddressSanitizer: libc interceptors initialized
>> || `[0x0a0000000000, 0x3fffffffffff]` || HighMem    ||
>> || `[0x034000000000, 0x09ffffffffff]` || HighShadow ||
>> || `[0x024000000000, 0x033fffffffff]` || ShadowGap  ||
>> || `[0x020000000000, 0x023fffffffff]` || LowShadow  ||
>> || `[0x000000000000, 0x01ffffffffff]` || LowMem     ||
>> MemToShadow(shadow): 0x024000000000 0x0247ffffffff 0x026800000000
>> 0x033fffffffff
>> redzone=16
>> max_redzone=2048
>> quarantine_size_mb=256M
>> thread_local_quarantine_size_kb=1024K
>> malloc_context_size=30
>> SHADOW_SCALE: 3
>> SHADOW_GRANULARITY: 8
>> SHADOW_OFFSET: 0x20000000000
>> ==19909==Installed the sigaction for signal 11
>> ==19909==Installed the sigaction for signal 7
>> ==19909==Installed the sigaction for signal 8
>> ==19909==T0: stack [0x3fffe86a0000,0x3fffe8ea0000) size 0x800000;
>> local=0x3fffe8e91da0
>> ==19909==AddressSanitizer Init done
>> PID: 19909
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: reading map 19909.sancov.map
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: unpacking 19909.sancov.raw
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: writing 1 PCs to
>> coverage-direct.cc.tmp.19909.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: writing 1 PCs to
>> libcoverage-direct.cc.tmp.dynamic.so.19909.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> coverage-direct.cc.tmp.19909.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> libcoverage-direct.cc.tmp.dynamic.so.19909.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: 2 files merged; 2 PCs total
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_printf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_sprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_snprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_fprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_vprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_vsprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_vsnprintf'
>> ==27096==AddressSanitizer: failed to intercept '__isoc99_vfprintf'
>> ==27096==AddressSanitizer: libc interceptors initialized
>> || `[0x0a0000000000, 0x3fffffffffff]` || HighMem    ||
>> || `[0x034000000000, 0x09ffffffffff]` || HighShadow ||
>> || `[0x024000000000, 0x033fffffffff]` || ShadowGap  ||
>> || `[0x020000000000, 0x023fffffffff]` || LowShadow  ||
>> || `[0x000000000000, 0x01ffffffffff]` || LowMem     ||
>> MemToShadow(shadow): 0x024000000000 0x0247ffffffff 0x026800000000
>> 0x033fffffffff
>> redzone=16
>> max_redzone=2048
>> quarantine_size_mb=256M
>> thread_local_quarantine_size_kb=1024K
>> malloc_context_size=30
>> SHADOW_SCALE: 3
>> SHADOW_GRANULARITY: 8
>> SHADOW_OFFSET: 0x20000000000
>> ==27096==Installed the sigaction for signal 11
>> ==27096==Installed the sigaction for signal 7
>> ==27096==Installed the sigaction for signal 8
>> ==27096==T0: stack [0x3ffffe510000,0x3ffffed10000) size 0x800000;
>> local=0x3ffffed04100
>> ==27096==AddressSanitizer Init done
>> PID: 27096
>> ==27096== CovDump: /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/
>> coverage-direct.cc.tmp.27096.sancov: 1 PCs written
>> ==27096== CovDump: /home/seurer/llvm/build/llvm-
>> test2/projects/compiler-rt/test/asan/POWERPC64LELinuxConfig/
>> TestCases/Posix/Output/coverage-direct/normal/libcoverage-direct.cc.tmp.
>> dynamic.so.27096.sancov: 1 PCs written
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal/
>> coverage-direct.cc.tmp.27096.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 1 64-bit PCs from
>> /home/seurer/llvm/build/llvm-test2/projects/compiler-rt/test/asan/
>> POWERPC64LELinuxConfig/TestCases/Posix/Output/coverage-direct/normal/
>> libcoverage-direct.cc.tmp.dynamic.so.27096.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: 2 files merged; 1 PCs total
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_printf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_sprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_snprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_fprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_vprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_vsprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_vsnprintf'
>> ==27521==AddressSanitizer: failed to intercept '__isoc99_vfprintf'
>> ==27521==AddressSanitizer: libc interceptors initialized
>> || `[0x0a0000000000, 0x3fffffffffff]` || HighMem    ||
>> || `[0x034000000000, 0x09ffffffffff]` || HighShadow ||
>> || `[0x024000000000, 0x033fffffffff]` || ShadowGap  ||
>> || `[0x020000000000, 0x023fffffffff]` || LowShadow  ||
>> || `[0x000000000000, 0x01ffffffffff]` || LowMem     ||
>> MemToShadow(shadow): 0x024000000000 0x0247ffffffff 0x026800000000
>> 0x033fffffffff
>> redzone=16
>> max_redzone=2048
>> quarantine_size_mb=256M
>> thread_local_quarantine_size_kb=1024K
>> malloc_context_size=30
>> SHADOW_SCALE: 3
>> SHADOW_GRANULARITY: 8
>> SHADOW_OFFSET: 0x20000000000
>> ==27521==Installed the sigaction for signal 11
>> ==27521==Installed the sigaction for signal 7
>> ==27521==Installed the sigaction for signal 8
>> ==27521==T0: stack [0x3fffcdaf0000,0x3fffce2f0000) size 0x800000;
>> local=0x3fffce2e5b00
>> ==27521==AddressSanitizer Init done
>> PID: 27521
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: reading map 27521.sancov.map
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: unpacking 27521.sancov.raw
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: writing 2 PCs to
>> coverage-direct.cc.tmp.27521.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: read 2 64-bit PCs from
>> coverage-direct.cc.tmp.27521.sancov
>> /home/seurer/llvm/llvm-test2/projects/compiler-rt/lib/
>> sanitizer_common/scripts/sancov.py: 1 file merged; 2 PCs total
>>
>> --
>>
>> ********************
>>
>>
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