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What is the purpose of having underscored names and then defining a non-underscored alias to it?
In a C implementation in <stdio.h> on Linux I saw something like: extern FILE *__stdinp; extern FILE *__stdoutp; extern FILE *__stderrp; And then: #define stdin __stdinp #define stdou...
#2: Post edited
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Alexei
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2023-11-29T10:32:53Z (6 months ago)
added relevant tags
#1: Initial revision
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2023-11-29T04:49:20Z (6 months ago)
What is the purpose of having underscored names and then defining a non-underscored alias to it?
In a C implementation in `<stdio.h>` on Linux I saw something like: ``` extern FILE *__stdinp; extern FILE *__stdoutp; extern FILE *__stderrp; ``` And then: ``` #define stdin __stdinp #define stdout __stdoutp #define stderr __stderrp ``` My question is, for what reason would an implementation provide the `__name` items and then create aliases to them instead of just providing the canonical name to begin with?