_stack_grow - express an intention to extend the stack
void *_stack_grow(void *addr);
The _stack_grow() function indicates to the system that the
stack is about to be extended to the address specified by
addr. If extending the stack to this address would violate
the stack boundaries as retreived by stack_getbounds(3C), a
SIGSEGV is raised.
If the disposition of SIGSEGV is SIG_DFL, the process is
terminated and a core dump is generated. If the application
has installed its own SIGSEGV handler to run on the alter-
nate signal stack, the signal information passed to the
handler will be such that a call to stack_violation(3C) with
these parameters returns 1.
The addr argument is a biased stack pointer value. See the
Solaris 64-bit Developer's Guide.
This function has no effect if the specified address, addr,
is within the bounds of the current stack.
If the _stack_grow() function succeeds and does not detect
a stack violation, it returns addr.
No errors are defined.
The _stack_grow() function does not actually adjust the
stack pointer register. The caller is responsible for mani-
pulating the stack pointer register once _stack_grow()
The _stack_grow() function is typically invoked by code
created by the compilation environment prior to executing
code that modifies the stack pointer. It can also be used by
hand-written assembly routines to allocate stack-based
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Evolving |
| MT-Level | Async-Signal-Safe |
Solaris 64-bit Developer's Guide
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