# standard-realloc-lhs

Determines whether the compiler uses the current Fortran Standard rules or the old Fortran 2003 rules when interpreting assignment statements.

## Syntax

Linux: | -standard-realloc-lhs -nostandard-realloc-lhs

macOS: | -standard-realloc-lhs -nostandard-realloc-lhs

Windows: | /standard-realloc-lhs /nostandard-realloc-lhs

## Arguments

None

## Default

standard-realloc-lhs | The compiler uses the current Fortran Standard rules when interpreting assignment statements.

## Description

This option determines whether the compiler uses the current Fortran Standard rules or the old Fortran 2003 rules when interpreting assignment statements.

Option standard-realloc-lhs (the default), tells the compiler that when the left-hand side of an assignment is an allocatable object, it should be reallocated to the shape of the right-hand side of the assignment before the assignment occurs. This is the current Fortran Standard definition. This feature may cause extra overhead at run time. This option has the same effect as option assume realloc_lhs.

If you specify nostandard-realloc-lhs, the compiler uses the old Fortran 2003 rules when interpreting assignment statements. The left-hand side is assumed to be allocated with the correct shape to hold the right-hand side. If it is not, incorrect behavior will occur. This option has the same effect as option assume norealloc_lhs.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Language Options