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| author | Aleksandr Vinokurov <[email protected]> | 2012-11-08 13:59:12 +0400 |
|---|---|---|
| committer | Fredrik Gustafsson <[email protected]> | 2013-04-30 11:12:24 +0200 |
| commit | 851f61719985651e769f8df8246d5ddb855cc022 (patch) | |
| tree | 2b678fe413655fe08b17ca60874793f27af93f9c /lib/kernel/src/os.erl | |
| parent | d93043ca0839e659abada62b0c6cf4d441808acf (diff) | |
| download | otp-851f61719985651e769f8df8246d5ddb855cc022.tar.gz otp-851f61719985651e769f8df8246d5ddb855cc022.tar.bz2 otp-851f61719985651e769f8df8246d5ddb855cc022.zip | |
Fix deep list argument error under Windows in os:cmd/1
Because of leeway in implementing os:cmd/1 under different OS there is
a difference in results when calling it with deep list
argument. os:cmd/1 specifies io_lib:chars() type for its argument and
io_lib functions can produce deep lists inspite of io_lib:chars()
result type specification. This commit flattens the argument for
erlang:open_port/2 (which is used under Windows) and expands the
os_SUITE to regress the bug.
Diffstat (limited to 'lib/kernel/src/os.erl')
| -rw-r--r-- | lib/kernel/src/os.erl | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl index 742c000cc1..2bded77fc4 100644 --- a/lib/kernel/src/os.erl +++ b/lib/kernel/src/os.erl @@ -187,11 +187,14 @@ cmd(Cmd) -> {unix, _} -> unix_cmd(Cmd); {win32, Wtype} -> - Command = case {os:getenv("COMSPEC"),Wtype} of + Command0 = case {os:getenv("COMSPEC"),Wtype} of {false,windows} -> lists:concat(["command.com /c", Cmd]); {false,_} -> lists:concat(["cmd /c", Cmd]); {Cspec,_} -> lists:concat([Cspec," /c",Cmd]) end, + %% open_port/2 awaits string() in Command, but io_lib:chars() can be + %% deep lists according to io_lib module description. + Command = lists:flatten(Command0), Port = open_port({spawn, Command}, [stream, in, eof, hide]), get_data(Port, []) end. |