Edit

Share via

check_stack pragma

  • Article

Instructs the compiler to turn off stack probes if off (or -) is specified, or to turn on stack probes if on (or +) is specified.

Syntax

#pragma check_stack( { on | off } )
#pragma check_stack { + | - }

Remarks

This pragma only applies to 32-bit platforms (x86, ARM32). It has no effect on 64-bit platforms.

This pragma takes effect at the first function defined after the pragma is seen. Stack probes are not inserted for macros or functions that are generated inline.

#pragma check_stack(off) / #pragma Check_stack- is ignored if the size of the function locals is larger than 4096 or the value specified by /Gs.

The default behavior of the compiler is to insert stack probes at the beginning of each function if the size of the locals exceeds 4096 or the value specified by /Gs.

Use /Gs (Control stack checking calls) to change the threshold of the locals that trigger stack probes. Use with caution.

Using #pragma check_stack() without arguments is deprecated.

See also

Compiler options
Pragma directives and the __pragma and _Pragma keywords