[compiler-rt] [Fuzzer] make big-file-copy.test work with the internal shell (PR #168658)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 updated https://github.com/llvm/llvm-project/pull/168658

>From 526cbcd3d70ef65ba265b02cd67aa9263f8301e5 Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Tue, 18 Nov 2025 20:07:51 -0800
Subject: [PATCH 1/2] [Fuzzer] make big-file-copy.test work with the internal
 shell

This patch uses several shell features not supported by the internal shell,
such as $? to get the exit code of a command, and exit. This patch adjusts
the test to work with the internal shell by using bash to run the actual command
with a zero exit code to ensure the file is deleted, and python to propagate
the exit code up to lit.
---
 compiler-rt/test/fuzzer/big-file-copy.test | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler-rt/test/fuzzer/big-file-copy.test b/compiler-rt/test/fuzzer/big-file-copy.test
index 9565ed4e0bca2..3008933794ae1 100644
--- a/compiler-rt/test/fuzzer/big-file-copy.test
+++ b/compiler-rt/test/fuzzer/big-file-copy.test
@@ -1,6 +1,6 @@
 REQUIRES: darwin
 UNSUPPORTED: ios
 RUN: %cpp_compiler %S/BigFileCopy.cpp -o %t
-RUN: %run %t -runs=1 -rss_limit_mb=4096 2>big-file-out.txt; result=$?
+RUN: bash -c "%run %t -runs=1 -rss_limit_mb=4096 2>big-file-out.txt; echo -n $? > %t.result"
 RUN: %run rm -f big-file.txt big-file-out.txt
-RUN: (exit $result)
+RUN: %python -c "import sys; sys.exit(%{readfile:%t.result})"

>From b1dbe73837fd803ef2d10d5e2d125024905909e6 Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman at google.com>
Date: Wed, 19 Nov 2025 09:15:14 -0800
Subject: [PATCH 2/2] feedback

---
 compiler-rt/test/fuzzer/big-file-copy.test | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/compiler-rt/test/fuzzer/big-file-copy.test b/compiler-rt/test/fuzzer/big-file-copy.test
index 3008933794ae1..b92379460ac3b 100644
--- a/compiler-rt/test/fuzzer/big-file-copy.test
+++ b/compiler-rt/test/fuzzer/big-file-copy.test
@@ -1,6 +1,5 @@
 REQUIRES: darwin
 UNSUPPORTED: ios
 RUN: %cpp_compiler %S/BigFileCopy.cpp -o %t
-RUN: bash -c "%run %t -runs=1 -rss_limit_mb=4096 2>big-file-out.txt; echo -n $? > %t.result"
-RUN: %run rm -f big-file.txt big-file-out.txt
-RUN: %python -c "import sys; sys.exit(%{readfile:%t.result})"
+RUN: bash -c '%run %t -runs=1 -rss_limit_mb=4096 2>big-file-out.txt; result=$? \
+RUN:   %run rm -f big-file.txt big-file-out.txt && exit $result'