B.2.78 -xcheck[=o] (Sun Studio 12: C User's Guide)

Sun Studio 12: C User's Guide

B.2.78 `-xcheck`[`=o`]

(SPARC) Compiling with -xcheck=stkovf adds a runtime check for stack overflow of the main thread in a singly-threaded program as well as slave-thread stacks in a multithreaded program. If a stack overflow is detected, a SIGSEGV is generated. If your application needs to handle a SIGSEGV caused by a stack overflow differently than it handles other address-space violations, see sigaltstack(2).

You can substitute one of the following values for o:

Table B–18 The -xcheck Flags


Flag	Meaning
`%none`	Perform none of the `-xcheck` checks.
`%all`	Perform all of the `-xcheck` checks.
`stkovf`	Turns on stack-overflow checking.
`no%stkovf`	Turns off stack-overflow checking.

If you do not specify -xcheck, the compiler defaults to-xcheck=%none. If you specify -xcheck without any arguments, the compiler defaults to-xcheck=%all which turns on the runtime check for stack overflow.

The -xcheck option does not accumulate on the command line. The compiler sets the flag in accordance with the last occurrence of the command.