chapuni wrote:
This has triggered a failure in our private builder (aarch64-ubuntu20.04)
```
******************** TEST 'libFuzzer-aarch64-default-Linux :: strncmp.test'
FAILED ********************
Exit Code: 1
Command Output (stderr):
--
RUN: at line 2: /home/bb/clang-aarch64/build/2/./bin/clang -Wthread-safety
-Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2
-gline-tables-only -fsanitize=address,fuzzer
-I/home/bb/clang-aarch64/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety
-Wthread-safety-reference -Wthread-safety-beta
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/StrncmpTest.cpp -o
/home/bb/clang-aarch64/build/2/projects/compiler-rt/test/fuzzer/AARCH64DefaultLinuxConfig/Output/strncmp.test.tmp-StrncmpTest
+ /home/bb/clang-aarch64/build/2/./bin/clang -Wthread-safety
-Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2
-gline-tables-only -fsanitize=address,fuzzer
-I/home/bb/clang-aarch64/llvm-project/compiler-rt/lib/fuzzer -Wthread-safety
-Wthread-safety-reference -Wthread-safety-beta
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/StrncmpTest.cpp -o
/home/bb/clang-aarch64/build/2/projects/compiler-rt/test/fuzzer/AARCH64DefaultLinuxConfig/Output/strncmp.test.tmp-StrncmpTest
RUN: at line 3: not
/home/bb/clang-aarch64/build/2/projects/compiler-rt/test/fuzzer/AARCH64DefaultLinuxConfig/Output/strncmp.test.tmp-StrncmpTest
-seed=2 -runs=10000000 2>&1 | FileCheck
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/strncmp.test
+ not
/home/bb/clang-aarch64/build/2/projects/compiler-rt/test/fuzzer/AARCH64DefaultLinuxConfig/Output/strncmp.test.tmp-StrncmpTest
-seed=2 -runs=10000000
+ FileCheck
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/strncmp.test
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/strncmp.test:4:8:
error: CHECK: expected string not found in input
CHECK: BINGO
^
<stdin>:1:1: note: scanning from here
INFO: Running with entropic power schedule (0xFF, 100).
^
Input file: <stdin>
Check file:
/home/bb/clang-aarch64/llvm-project/compiler-rt/test/fuzzer/strncmp.test
-dump-input=help explains the following input dump.
Input was:
<<<<<<
1: INFO: Running with entropic power schedule (0xFF, 100).
check:4 X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no
match found
2: INFO: Seed: 2
check:4 ~~~~~~~~~~~~~~
3: INFO: Loaded 1 modules (12 inline 8-bit counters): 12
[0xaaaaccfe3f00, 0xaaaaccfe3f0c),
check:4
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4: INFO: Loaded 1 PC tables (12 PCs): 12
[0xaaaaccfe3f10,0xaaaaccfe3fd0),
check:4
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5: INFO: -max_len is not provided; libFuzzer will not generate inputs
larger than 4096 bytes
check:4
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6: INFO: A corpus is not provided, starting from an empty corpus
check:4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.
.
.
>>>>>>
--
********************
```
https://github.com/llvm/llvm-project/pull/104741
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