Editing Variadic function (section)

===In Pascal===
[[Pascal (programming language)|Pascal]] is standardized by [[International Organization for Standardization|ISO]] standards 7185 (“Standard Pascal”) and 10206 (“Extended Pascal”).
Neither standardized form of Pascal supports variadic routines, ''except'' for certain [[Intrinsic function|built-in routines]] ({{code|read|pascal}}/{{code|readLn|pascal}} and {{code|write|pascal}}/{{code|writeLn|pascal}}, and additionally in {{abbr|EP|Extended Pascal}} {{code|readStr|pascal}}/{{code|writeStr|pascal}}).

Nonetheless, ''dialects'' of Pascal implement mechanisms ''resembling'' variadic routines.
[[Delphi (programming language)|Delphi]] defines an {{code|array of const|delphi}} data type that may be associated with the ''last'' [[formal parameter]].
Within the routine definition the {{code|array of const|delphi}} is an {{code|array of TVarRec|delphi}}, an [[Array (data type)|array]] of [[variant record]]s.<ref name="delphi">{{cite web|url=https://docwiki.embarcadero.com/RADStudio/Alexandria/en/Parameters_(Delphi)#Variant_Open_Array_Parameters|title=Parameters (Delphi)|access-date=2023-08-28}}</ref>
The {{code|VType|delphi}} member of the aforementioned {{code|record|delphi}} data type allows inspection of the argument’s data type and subsequent appropriate handling.
The [[Free Pascal Compiler]] supports Delphi’s variadic routines, too.<ref name="fpc">{{cite web|url=https://www.freepascal.org/docs-html/3.2.0/ref/refsu68.html|title=Free Pascal - Reference guide|access-date=2023-08-28}}</ref>

This implementation, however, technically requires a ''single'' argument, that is an {{code|array|pascal}}.
Pascal imposes the restriction that arrays need to be homogenous.
This requirement is circumvented by utilizing a variant record.
The [[GNU Pascal]] defines a real variadic formal parameter specification using an ellipsis ({{code|...|pascal}}), but as of 2022 no portable mechanism to use such has been defined.<ref name="gpc">{{cite web|url=https://www.gnu-pascal.de/gpc/Special-Parameters.html|title=The GNU Pascal Manual|access-date=2023-08-28}}</ref>

Both GNU Pascal and FreePascal allow externally declared functions to use a variadic formal parameter specification using an ellipsis ({{code|...|pascal}}).