Segmentation fault

[Kyle R. Rose]

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Mark Donnelly <gimli at offcenter.org> writes:

> On Sun, 6 Feb 2000, Brad Noyes wrote:
> 
> > I'm writing a c++ program that before i changed distributions from RH6.0, to
> > Mandrake worked. But now i try to run it i get a Segmentation fault when i
> > execute it with no core dump.
> 
> Seg faults: the wonderful, wonderful sign of memory leaks.
> aaahhhh..

Not to be completely pedantic, but what you're describing is a
dangling pointer.  A memory leak occurs when you allocate memory and
forget to deallocate it.  A dangling pointer almost always causes a
segmentation fault on good operating systems; a memory leak never does
(unless your OS signals a segfault when you run out of memory; IIRC,
Linux glibc just returns a NULL on malloc, which _then_ causes a seg
fault if you try to use it without checking if it's NULL).

Kyle

- -- 
Kyle R. Rose                    MIT LCS NE43-309, Cambridge, MA
11 Winslow Avenue Apt. 2        617-253-5883
Somerville, MA 02144            krose at krose.yi.org
617-628-0271                    http://yi.org/krose/

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