asked on
use of variable attribute
I saw at some places in my code the functions were defined in this way
#define USED_ATTR __attribute__ ((used))
return_type func_name(parameters) const USED_ATTR { }
I tried to read this but cannot understand the real use case of this
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0348c/BABCJJID.html
What exactly is __attribute__ ((used)) doing underneath
What does it mean by retain in object file
#define USED_ATTR __attribute__ ((used))
return_type func_name(parameters) const USED_ATTR { }
I tried to read this but cannot understand the real use case of this
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0348c/BABCJJID.html
What exactly is __attribute__ ((used)) doing underneath
What does it mean by retain in object file
C++C
Last Comment
jkr
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SOLUTION
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ASKER
so its strictly for optimization/performance use case and nothing to do with the symbol defined elsewhere in the library?
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