Developer Guide and Reference

Contents

alias-const, Qalias-const

Determines whether the compiler assumes a parameter of type pointer-to-const does not alias with a parameter of type pointer-to-non-const.

Syntax

Linux:
-alias-const
-no-alias-const
macOS:
-alias-const
-no-alias-const
Windows:
/Qalias-const
/Qalias-const-
Arguments
None
Default
-no-alias-const
or
/Qalias-const-
The compiler uses standard C/C++ rules for the interpretation of const.
Description
This option determines whether the compiler assumes a parameter of type pointer-to-const does not alias with a parameter of type pointer-to-non-const. It implies an additional attribute for const.
This functionality complies with the input/output buffer rule, which assumes that input and output buffer arguments do not overlap. This option allows the compiler to do some additional optimizations with those parameters.
In C99, you can also get the same result if you additionally declare your pointer parameters with the restrict keyword.
Alternate Options
None