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• gcc -fstack-check causes segmentation fault ?

  - by stcatz

  I have got a segmentation fault even with a "Hello World!" program sometimes. The interesting thing is that the segmentation fault not always shows up. Does there are some kind of famout bug on this flag? My gcc version is 4.1.1 with redhat 64bit.

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• How does the gcc option -fstack-check exactly work?

  - by stcatz

  My program crashed when I added the option -fstack-check and -fstack-protector. __stack_chk_fail is called in the back trace. So how could I know where the problem is ? What does -fstack-check really check ? The information about gcc seems too huge to find out the answer.

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