Disable coredumps for fuzzers (#67340)

src/coreclr/scripts/antigen_run.py

@@ -202,6 +202,13 @@ def main(main_args):
         path_to_corerun += ".exe"
         path_to_tool += ".exe"
 
+    if not is_windows:
+        # Disable core dumps. The fuzzers have their own graceful handling for
+        # runtime crashes. Especially on macOS we can quickly fill up the drive
+        # with dumps if we find lots of crashes since dumps there are very big.
+        import resource
+        resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
+
     try:
         # Run tool such that issues are placed in a temp folder
         with TempDir() as temp_location:

src/coreclr/scripts/fuzzlyn_run.py

@@ -177,6 +177,13 @@ def main(main_args):
 
     os.makedirs(output_directory, exist_ok=True)
 
+    if not is_windows:
+        # Disable core dumps. The fuzzers have their own graceful handling for
+        # runtime crashes. Especially on macOS we can quickly fill up the drive
+        # with dumps if we find lots of crashes since dumps there are very big.
+        import resource
+        resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
+
     with TempDir() as temp_location:
         summary_file_name = "issues-summary-{}.txt".format(tag_name)
         summary_file_path = path.join(temp_location, summary_file_name)