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Re: [PATCH] Use strdup in dd to avoid changing argv elements


From: Eric Blake
Subject: Re: [PATCH] Use strdup in dd to avoid changing argv elements
Date: Mon, 28 Jan 2008 11:12:59 -0700
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According to Andreas Schwab on 1/28/2008 7:21 AM:
| I think you are mixing up something here.  This statement is only
| related to the fact that a call to exec* must not modify any of the argv
| and envp strings, despite the difficulty of expressing that in the
| prototype.  The C standard explicitly requires that the argv array
| contents are modifiable in the executed process.

Indeed, I stand corrected.  C99 5.1.2.2.1 states:
"The parameters argc and argv and the strings pointed to by the argv array
shall be modifiable by the program, and retain their last-stored values
between program startup and program termination."

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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