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More explicit error message

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When running an executable fails, the original error message sent by
the OS is printed, together with a more detailed suggested solution.

BUG=

Review URL: https://codereview.chromium.org/245133003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@266908 0039d316-1c4b-4281-b951-d872f2087c98
This commit is contained in:
pgervais@chromium.org
2014-04-29 17:29:18 +00:00
parent 022d06ef61
commit fb653b65e5
1 changed files with 3 additions and 2 deletions
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5
subprocess2.py
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@@ -248,8 +248,9 @@ class Popen(subprocess.Popen):
'to learn how to fix this error; you need to rebase your cygwin '
'dlls')
# Popen() can throw OSError when cwd or args[0] doesn't exist.
raise OSError('%s or %s probably doesn\'t exist' %
(kwargs.get('cwd'), args[0]))
raise OSError('Execution failed with error: %s.\n'
'Check that %s or %s exist and have execution permission.'
% (str(e), kwargs.get('cwd'), args[0]))
def _tee_threads(self, input): # pylint: disable=W0622
"""Does I/O for a process's pipes using threads.