[clang] [clang][ssaf] Add clang-ssaf-merge-transformation-report (PR #231664)

Tue Oct 13 20:59:40 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-s390x-linux` running on `systemz-1` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/42/builds/11208

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'libFuzzer-s390x-default-Linux :: fuzzer-timeout.test' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
/home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer  /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutTest.cpp -o /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
# executed command: /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutTest.cpp -o /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
# RUN: at line 2
/home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang    -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer  /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutEmptyTest.cpp -o /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutEmptyTest
# executed command: /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang -Wthread-safety -Wthread-safety-reference -Wthread-safety-beta --driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer -I/home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutEmptyTest.cpp -o /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutEmptyTest
# RUN: at line 3
not  /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1 2>&1 | FileCheck /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test --check-prefix=TimeoutTest
# executed command: not /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1
# executed command: FileCheck /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test --check-prefix=TimeoutTest
# RUN: at line 12
not  /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1 /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/hi.txt 2>&1 | FileCheck /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test --check-prefix=SingleInputTimeoutTest
# executed command: not /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1 /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/hi.txt
# executed command: FileCheck /home/buildbot/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test --check-prefix=SingleInputTimeoutTest
# RUN: at line 16
/home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1 -timeout_exitcode=0
# executed command: /home/buildbot/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest -timeout=1 -timeout_exitcode=0
# .---command stderr------------
# | INFO: Running with entropic power schedule (0xFF, 100).
# | INFO: Seed: 3176539216
# | INFO: Loaded 1 modules   (12 inline 8-bit counters): 12 [0x2aa34bcaea0, 0x2aa34bcaeac), 
# | INFO: Loaded 1 PC tables (12 PCs): 12 [0x2aa34bcaeb0,0x2aa34bcaf70), 
# | INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
# | INFO: A corpus is not provided, starting from an empty corpus
# | #2	INITED cov: 2 ft: 2 corp: 1/1B exec/s: 0 rss: 113MB
# | #2776	NEW    cov: 3 ft: 3 corp: 2/24B lim: 29 exec/s: 0 rss: 113MB L: 23/23 MS: 4 ShuffleBytes-ChangeByte-ChangeByte-InsertRepeatedBytes-
# | #2801	REDUCE cov: 3 ft: 3 corp: 2/23B lim: 29 exec/s: 0 rss: 113MB L: 22/22 MS: 5 ShuffleBytes-ShuffleBytes-InsertRepeatedBytes-InsertByte-CrossOver-
# | #2806	REDUCE cov: 3 ft: 3 corp: 2/16B lim: 29 exec/s: 0 rss: 113MB L: 15/15 MS: 5 ChangeBinInt-ChangeBit-InsertRepeatedBytes-ChangeByte-EraseBytes-
# | #2818	REDUCE cov: 3 ft: 3 corp: 2/6B lim: 29 exec/s: 0 rss: 113MB L: 5/5 MS: 2 ChangeBit-CrossOver-
# | #2849	REDUCE cov: 3 ft: 3 corp: 2/4B lim: 29 exec/s: 0 rss: 113MB L: 3/3 MS: 1 EraseBytes-
# | #2895	REDUCE cov: 3 ft: 3 corp: 2/3B lim: 29 exec/s: 0 rss: 113MB L: 2/2 MS: 1 EraseBytes-
# | #2906	REDUCE cov: 4 ft: 4 corp: 3/4B lim: 29 exec/s: 0 rss: 113MB L: 1/2 MS: 1 EraseBytes-
# | #4301	REDUCE cov: 5 ft: 5 corp: 4/35B lim: 38 exec/s: 0 rss: 113MB L: 31/31 MS: 5 ShuffleBytes-ChangeBit-CrossOver-ShuffleBytes-InsertRepeatedBytes-
# | #4452	REDUCE cov: 5 ft: 5 corp: 4/29B lim: 38 exec/s: 0 rss: 113MB L: 25/25 MS: 1 EraseBytes-
# | #4512	REDUCE cov: 5 ft: 5 corp: 4/24B lim: 38 exec/s: 0 rss: 113MB L: 20/20 MS: 5 ChangeBit-InsertRepeatedBytes-ChangeASCIIInt-CrossOver-EraseBytes-
# | #4530	REDUCE cov: 5 ft: 5 corp: 4/15B lim: 38 exec/s: 0 rss: 113MB L: 11/11 MS: 3 CopyPart-ChangeByte-EraseBytes-
# | #4558	REDUCE cov: 5 ft: 5 corp: 4/10B lim: 38 exec/s: 0 rss: 113MB L: 6/6 MS: 3 CrossOver-CrossOver-EraseBytes-
# | #4610	REDUCE cov: 5 ft: 5 corp: 4/8B lim: 38 exec/s: 0 rss: 113MB L: 4/4 MS: 2 ChangeBit-EraseBytes-
# | #4644	REDUCE cov: 5 ft: 5 corp: 4/7B lim: 38 exec/s: 0 rss: 113MB L: 3/3 MS: 4 InsertByte-ChangeBinInt-ChangeByte-EraseBytes-
# | #4700	REDUCE cov: 6 ft: 6 corp: 5/9B lim: 38 exec/s: 0 rss: 113MB L: 2/3 MS: 1 EraseBytes-
# | ALARM: working on the last Unit for 1 seconds
# |        and the timeout value is 1 (use -timeout=N to change)
# | MS: 1 InsertByte-; base unit: a1fe6ca8f706477e0cc1b0287c75445d0e60583e
# | 0x48,0x69,0x21,0xf1,
# | Hi!\361
...

```

</details>

https://github.com/llvm/llvm-project/pull/231664