[Clang] Port ulimit tests to work with internal shell

[boomanaiden154]

Now that ulimit is implemented for the internal shell, we can make sure
that the clang tests utilizing ulimit actually work. One just needs the
removal of its shell requirement while the other one needs some rework
to avoid bash for loops. These are writtein in Python for about the same
amount of complexity.

[llvmbot]

@llvm/pr-subscribers-clang

Author: Aiden Grossman (boomanaiden154)

Changes

Now that ulimit is implemented for the internal shell, we can make sure
that the clang tests utilizing ulimit actually work. One just needs the
removal of its shell requirement while the other one needs some rework
to avoid bash for loops. These are writtein in Python for about the same
amount of complexity.

---

Full diff: https://github.com/llvm/llvm-project/pull/157977.diff

2 Files Affected:

• (modified) clang/test/PCH/leakfiles.test (+3-4)
• (modified) clang/test/SemaCXX/PR51712-large-array-constexpr-check-oom.cpp (-1)

diff --git a/clang/test/PCH/leakfiles.test b/clang/test/PCH/leakfiles.test
index dc4047ac3ff48..6f7420362a2c6 100644
--- a/clang/test/PCH/leakfiles.test
+++ b/clang/test/PCH/leakfiles.test
@@ -2,7 +2,6 @@
 // https://bugs.chromium.org/p/chromium/issues/detail?id=924225
 //
 // This test requires bash loops and ulimit.
-// REQUIRES: shell
 // UNSUPPORTED: target={{.*win32.*}}
 //
 // Set up source files. lib/lib.h includes lots of lib*.h files in that dir.
@@ -12,10 +11,10 @@
 // RUN: mkdir %t
 // RUN: cd %t
 // RUN: mkdir lib
-// RUN: for i in {1..300}; do touch lib/lib$i.h; done
-// RUN: for i in {1..300}; do echo "#include \"lib$i.h\"" >> lib/lib.h; done
+// RUN: %python -c "from pathlib import Path; list(map(lambda i: Path(f'lib/lib{i}.h').touch(), range(1, 301)))"
+// RUN: %python -c "for i in range(1, 301): print(f'#include \"lib{i}.h\"')" > lib/lib.h
 // RUN: echo "#include \"lib/lib.h\"" > client.c
-// RUN: for i in {1..300}; do echo "#include \"lib/lib$i.h\"" >> client.c; done
+// RUN: %python -c "for i in range(1, 301): print(f'#include \"lib/lib{i}.h\"')" > client.c
 //
 // We want to verify that we don't hold all the files open at the same time.
 // This is important e.g. on mac, which has a low default FD limit.
diff --git a/clang/test/SemaCXX/PR51712-large-array-constexpr-check-oom.cpp b/clang/test/SemaCXX/PR51712-large-array-constexpr-check-oom.cpp
index 98e1a9afae6ea..df5d8c513d514 100644
--- a/clang/test/SemaCXX/PR51712-large-array-constexpr-check-oom.cpp
+++ b/clang/test/SemaCXX/PR51712-large-array-constexpr-check-oom.cpp
@@ -1,7 +1,6 @@
 // Only run this test where ulimit is known to work well.
 // (There's nothing really platform-specific being tested, this is just ulimit).
 //
-// REQUIRES: shell
 // REQUIRES: system-linux
 // UNSUPPORTED: msan
 // UNSUPPORTED: asan