| <Syntax> |
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type , VOLATILE [ , attr ]... :: decl-list
VOLATILE [ :: ] name [ , name ]...
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| <Semantics> |
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The VOLATILE attribute means that the variable may be changed, or referenced, by means other than Fortran.
You should use this attribute when a variable can be referenced asynchronously (e.g. from a parallel thread).
It effectively disables optimisation of the variable and forces all references and definitions to go through memory.
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A variable that is accessed by a
USE statement or by host association is permitted to be declared VOLATILE; this
does not hide the variable, but makes it volatile only within the local
procedure.
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| <Related> |
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Type Declaration statement |
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