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Date: | Sun, 13 Jan 2013 21:11:44 -0800 (PST) |
From: | YZFury <yzfury AT gmail DOT com> |
To: | cygwin AT cygwin DOT com |
Message-ID: | <3e6368c8-5f18-496c-b677-cf499369b3be@email.android.com> |
In-Reply-To: | <CAPF-yObDjWtx5bQEmCk1nCzoo-razSns+yvq2VXsnv2d+PYX_w@mail.gmail.com> |
References: | <1358135756673-95377 DOT post AT n5 DOT nabble DOT com> <CAPF-yObDjWtx5bQEmCk1nCzoo-razSns+yvq2VXsnv2d+PYX_w AT mail DOT gmail DOT com> |
Subject: | Re: Using the free(*ptr) routine and getting an exception, "Exception: STATUS_ACCESS_VIOLATION" |
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Whoops. I was making the pointer point to x instead of putting x's value in the memory that was just allocated. Now i understand that. Really sorry for a stupid syntax error question on my part. thanks for the quick reply though :). Like I said basically new to C. Sent from my Kindle Fire _____________________________________________ From: "Dan Kegel-2 [via Cygwin]" <ml-node+s1069669n95381h52 AT n5 DOT nabble DOT com> Sent: Sun Jan 13 23:52:50 EST 2013 To: YZFury <yzfury AT gmail DOT com> Subject: Re: Using the free(*ptr) routine and getting an exception, "Exception: STATUS_ACCESS_VIOLATION" On Sun, Jan 13, 2013 at 7:55 PM, YZFury <[hidden email]> wrote: > int *ptr = malloc(sizeof(*ptr)); > int x = 87; > ptr = &x; > printf("%d", *ptr); > free(ptr);//it goes wrong here As you probably know, you can't call free() on a pointer that didn't come from malloc(). ptr's first value came from malloc, but you overwrote that with ptr = &x; Perhaps you meant *ptr = x; So you're a level of indirection off. - Dan -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple _____________________________________________ If you reply to this email, your message will be added to the discussion below: http://cygwin.1069669.n5.nabble.com/Using-the-free-ptr-routine-and-getting-an-exception-Exception-STATUS-ACCESS-VIOLATION-tp95377p95381.html To unsubscribe from Using the free(*ptr) routine and getting an exception, "Exception: STATUS_ACCESS_VIOLATION", click here. NAML -- View this message in context: http://cygwin.1069669.n5.nabble.com/Using-the-free-ptr-routine-and-getting-an-exception-Exception-STATUS-ACCESS-VIOLATION-tp95377p95382.html Sent from the Cygwin list mailing list archive at Nabble.com. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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