[llvm] [utils/not] Disable coredumps when --crash is passed (PR #83704)

[Alexander Richardson via llvm-commits]

https://github.com/arichardson updated https://github.com/llvm/llvm-project/pull/83704

>From 3056fcfc95e8f60e630aae3892f37f5eb9b6656e Mon Sep 17 00:00:00 2001
From: Alex Richardson <alexrichardson at google.com>
Date: Sat, 2 Mar 2024 19:38:21 -0800
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 llvm/utils/not/not.cpp | 4 ++++
 1 file changed, 4 insertions(+)

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)