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Fixed #19510 -- Race condition in template loading.
Thanks Kronuz and regebro.
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@ -43,7 +43,9 @@ class Loader(BaseLoader):
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# If template directories were specified, use a hash to differentiate
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key = '-'.join([template_name, hashlib.sha1(force_bytes('|'.join(template_dirs))).hexdigest()])
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if key not in self.template_cache:
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try:
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template = self.template_cache[key]
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except KeyError:
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template, origin = self.find_template(template_name, template_dirs)
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if not hasattr(template, 'render'):
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try:
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@ -55,7 +57,7 @@ class Loader(BaseLoader):
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# of the actual template that does not exist.
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return template, origin
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self.template_cache[key] = template
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return self.template_cache[key], None
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return template, None
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def reset(self):
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"Empty the template cache."
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