| <Syntax> |
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NULL ( [ MOLD ] )
MOLD : pointer or allocatable of any type and rank;
Result : Same type, type parameters and rank as MOLD if present, otherwise determined by context.
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| <Semantics> |
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Depending on MOLD, or the surrounding context if MOLD is absent, the result is either a disassociated pointer or an unallocated allocatable entity.
| Context |
Attributes taken from |
| target of pointer assignment |
pointer being assigned to |
| initialisation (in declaration or DATA) |
object being initialised |
| default initialisation |
component being default-initialised |
| value in a structure constructor |
component it is the value for |
| actual argument |
dummy argument |
Note that in the case of an actual argument, MOLD cannot be omitted if any type parameter of the dummy argument is deferred (‘:’), or if the reference is generic and any attribute of that argument is required to resolve the generic.
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| <Related> |
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ALLOCATABLE attribute,
ALLOCATED intrinsic function,
ASSOCIATED intrinsic function,
Component Definition statement,
DATA statement,
NULLIFY statement,
POINTER attribute,
Pointer assignment statement,
Type Declaration statement.
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