My advice on implementing stuff in C: [LWN.net]

My advice on implementing stuff in C:

Posted Oct 25, 2010 22:28 UTC (Mon) by paulj (subscriber, #341)
In reply to: My advice on implementing stuff in C: by hppnq
Parent article: Russell: On C Library Implementation

FWIW, it's not defined what happens if you overflow the stack. You can't rely on getting a SEGV (isn't that a very recent addition to Linux, thanks to that Xorg security hole)?

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My advice on implementing stuff in C:

Posted Oct 25, 2010 22:36 UTC (Mon) by nix (subscriber, #2304) [Link] (1 responses)

Even if you do get SIGSEGV from a stack-OOM, well, you'd better hope the system supports sigaltstack() as well, or you'll not be able to call the signal handler... oh, and, btw, it is (even now) easier to make a list of the systems on which sigaltstack() works properly than the systems on which it does not :(

My advice on implementing stuff in C:

Posted Oct 26, 2010 7:55 UTC (Tue) by hppnq (guest, #14462) [Link]

The point is, you can't safely expand the stack by recursing deeply in order to prevent running out of stack.