[PATCH 2 of 5 V4] match: test for overflow error in pattern
Boris Feld
boris.feld at octobus.net
Sat Dec 1 07:07:32 EST 2018
# HG changeset patch
# User Boris Feld <boris.feld at octobus.net>
# Date 1542903365 -3600
# Thu Nov 22 17:16:05 2018 +0100
# Node ID 062da9819592bc5abd87b9a2e00739bb6729015d
# Parent cd8a3de2d43af89b3db66f6c539a11ef80feb5a2
# EXP-Topic perf-ignore
# Available At https://bitbucket.org/octobus/mercurial-devel/
# hg pull https://bitbucket.org/octobus/mercurial-devel/ -r 062da9819592
match: test for overflow error in pattern
If a single pattern is too large to handle, we raise an exception. This case is
now doctested.
diff --git a/mercurial/match.py b/mercurial/match.py
--- a/mercurial/match.py
+++ b/mercurial/match.py
@@ -1188,7 +1188,16 @@ MAX_RE_SIZE = 20000
def _buildregexmatch(kindpats, globsuffix):
"""Build a match function from a list of kinds and kindpats,
- return regexp string and a matcher function."""
+ return regexp string and a matcher function.
+
+ Test too large input
+ >>> _buildregexmatch([
+ ... ('relglob', '?' * MAX_RE_SIZE, '')
+ ... ], '$')
+ Traceback (most recent call last):
+ ...
+ OverflowError
+ """
try:
regex = '(?:%s)' % '|'.join([_regex(k, p, globsuffix)
for (k, p, s) in kindpats])
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