[compiler-rt] [compiler-rt] [libFuzzer] Fix merge-posix.test file size test (PR #168137)

[Andrew Haberlandt via llvm-commits]

https://github.com/ndrewh updated https://github.com/llvm/llvm-project/pull/168137

>From f8263f285f492bb03ea5d586df2b922e48aad412 Mon Sep 17 00:00:00 2001
From: Andrew Haberlandt <ahaberlandt at apple.com>
Date: Fri, 14 Nov 2025 14:24:35 -0800
Subject: [PATCH 1/2] [compiler-rt] Fix merge-posix.test file size test

---
 compiler-rt/test/fuzzer/merge-posix.test | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler-rt/test/fuzzer/merge-posix.test b/compiler-rt/test/fuzzer/merge-posix.test
index 2721668fb9706..edd91324e5a92 100644
--- a/compiler-rt/test/fuzzer/merge-posix.test
+++ b/compiler-rt/test/fuzzer/merge-posix.test
@@ -14,7 +14,7 @@ RUN: echo ....U. > %tmp/T2/2
 RUN: echo ...Z.. > %tmp/T2/3
 RUN: echo ...Z.. > %tmp/T2/4
 RUN: echo ....E. > %tmp/T2/5
-RUN: echo .....R > %tmp/T2/6
+RUN: (echo .....R; for i in {1..1024}; do echo -n X; done) > %tmp/T2/6
 
 # Check that we can report an error if file size exceeded
 RUN: (ulimit -f 1; not %run %t-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=SIGXFSZ)

>From 52c654e8c374e4633086d2449b58628d0b27c54e Mon Sep 17 00:00:00 2001
From: Andrew Haberlandt <ahaberlandt at apple.com>
Date: Mon, 17 Nov 2025 09:01:40 -0800
Subject: [PATCH 2/2] Switch to %python for writing test file

---
 compiler-rt/test/fuzzer/merge-posix.test | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler-rt/test/fuzzer/merge-posix.test b/compiler-rt/test/fuzzer/merge-posix.test
index edd91324e5a92..5e342142216f8 100644
--- a/compiler-rt/test/fuzzer/merge-posix.test
+++ b/compiler-rt/test/fuzzer/merge-posix.test
@@ -14,7 +14,7 @@ RUN: echo ....U. > %tmp/T2/2
 RUN: echo ...Z.. > %tmp/T2/3
 RUN: echo ...Z.. > %tmp/T2/4
 RUN: echo ....E. > %tmp/T2/5
-RUN: (echo .....R; for i in {1..1024}; do echo -n X; done) > %tmp/T2/6
+RUN: %python -c "print('.....R' + 'X' * 1024, end='')" > %tmp/T2/6
 
 # Check that we can report an error if file size exceeded
 RUN: (ulimit -f 1; not %run %t-FullCoverageSetTest -merge=1 %tmp/T1 %tmp/T2 2>&1 | FileCheck %s --check-prefix=SIGXFSZ)