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[LIT][Cygwin] Mark ulimit -n unsupported for Cygwin #164604

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Merged
merged 1 commit into from
Oct 23, 2025
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[LIT][Cygwin] Mark ulimit -n unsupported for Cygwin #164604

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8 changes: 6 additions & 2 deletions llvm/utils/lit/lit/run.py
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Original file line number Diff line number Diff line change
Expand Up @@ -137,6 +137,10 @@ def _increase_process_limit(self):
"Raised process limit from %d to %d" % (soft_limit, desired_limit)
)
except Exception as ex:
# Warn, unless this is Windows or z/OS, in which case this is expected.
if os.name != "nt" and platform.system() != "OS/390":
# Warn, unless this is Windows, z/OS, or Cygwin in which case this is expected.
if (
os.name != "nt"
and platform.system() != "OS/390"
and platform.sys.platform != "cygwin"
):
self.lit_config.warning("Failed to raise process limit: %s" % ex)
2 changes: 1 addition & 1 deletion llvm/utils/lit/tests/shtest-ulimit.py
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Expand Up @@ -3,7 +3,7 @@
# ulimit does not work on non-POSIX platforms.
# Solaris for some reason does not respect ulimit -n, so mark it unsupported
# as well.
# UNSUPPORTED: system-windows, system-solaris
# UNSUPPORTED: system-windows, system-cygwin, system-solaris

# RUN: not %{lit} -a -v %{inputs}/shtest-ulimit --order=lexical | FileCheck %s

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