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Full Discussion: Why does this example C code run and yet SHOULD either not compile or give a segmentation fault?
Top Forums Programming Why does this example C code run and yet SHOULD either not compile or give a segmentation fault? Post 303033009 by Corona688 on Thursday 28th of March 2019 11:15:36 AM
Old 03-28-2019
Quote:
Originally Posted by wisecracker
7 ./cross_function_jump is obviously wrong but I have successfully got 'argv[0]'.
Because argv[0] actually exists, even in a program with no arguments - it's the name of the calling program.
Quote:
I don't care what is happening but compiling AND running without a segmentation fault is is not a fault of the programmer but of the compiler.
Again, why should it segfault? What exact fault should it be catching here? Segmentation fault means "touched memory I don't have permission to use", and if you don't do that, you don't get a segfault, even if you leap around like a flea on a hot griddle.
 

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LEARN ABOUT DEBIAN

itksnap

ITKSNAP(1)							   User Commands							ITKSNAP(1)

NAME

       itksnap - semi-automatic segmentation of structures in 3D images

SYNOPSIS

       itksnap [options] [grey_image]

DESCRIPTION

       SNAP  provides semi-automatic segmentation of structures in medical images (e.g.  magnetic resonance images of the brain) using active con-
       tour methods, as well as manual delineation and image navigation.  Noteworthy features are:

       * Linked cursor for seamless 3D navigation

       * Manual segmentation in three orthogonal planes at once

       * Support for many different 3D image formats, including NIfTI

       * Support for concurrent, linked viewing and segmentation of multiple images

       * Limited support for color images (e.g., diffusion tensor maps)

       * 3D cut-plane tool for fast post-processing of segmentation results

OPTIONS

       --grey, -g FILE
	      Load greyscale image FILE (optional)

       --segmentation, -s FILE
	      Load segmentation image FILE

       --labels, -l FILE
	      Load label description file FILE

       --rgb FILE
	      Load RGB image FILE (as overlay if combined with -g)

AUTHOR

       ITK-SNAP was written by Paul A. Yushkevichi, Hui Zhang, Casey Goodlett, Timothy Burke, Nicholas	Tustison,  Guido  Gerig,  Silvio  Turello,
       Joachim	Schlegel,  Gabor Szekely, Chris Wynn, Arun Neelamkavil, David Gregg, Eric Larsen, Sanjay Sthapit, Sean Ho, Ashraf Farrag, Amy Hen-
       derson, Robin Munesato, Ming Yu, Nathan Moon, Thorsten Scheuermann, Konstantin Bobkov, Nathan Talbert, Yongjik Kim, Pierre Fillard,  Daniel
       S. Fritsch, Stephen R. Aylward

       This manual page was written by Michael Hanke <michael.hanke@gmail.com>, for the Debian project (but may be used by others).

SEE ALSO

       Manual and tutorial: http://itksnap.org

Michael Hanke							    April 2010								ITKSNAP(1)
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