[utils/not] Disable coredumps when --crash is passed

[arichardson]

We are expecting a crash, so it is unlikely that a coredump is going to
be particularly useful. For debugging the program can always be run without
the not --crash wrapper.

[llvmbot]

@llvm/pr-subscribers-testing-tools

Author: Alexander Richardson (arichardson)

Changes

We are expecting a crash, so it is unlikely that a coredump is going to
be particularly useful. For debugging the program can always be run without
the not --crash wrapper.

---

Full diff: https://github.com/llvm/llvm-project/pull/83704.diff

1 Files Affected:

• (modified) llvm/utils/not/not.cpp (+4)

diff --git a/llvm/utils/not/not.cpp b/llvm/utils/not/not.cpp
index 4fcc0e89fc4023..1504ee87a3606c 100644
--- a/llvm/utils/not/not.cpp
+++ b/llvm/utils/not/not.cpp
@@ -12,6 +12,7 @@
 //     Will return true if cmd crashes (e.g. for testing crash reporting).
 
 #include "llvm/Support/Program.h"
+#include "llvm/Support/Process.h"
 #include "llvm/Support/WithColor.h"
 #include "llvm/Support/raw_ostream.h"
 
@@ -41,6 +42,9 @@ int main(int argc, const char **argv) {
     setenv("LLVM_DISABLE_CRASH_REPORT", "1", 0);
     setenv("LLVM_DISABLE_SYMBOLIZATION", "1", 0);
 #endif
+    // Try to disable coredumps for expected crashes as well since this can
+    // noticeably slow down running the test suite.
+    sys::Process::PreventCoreFiles();
   }
 
   if (argc == 0)

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[jh7370]

LGTM once clang-format has been placated.