This intrinsic returns the return address of the current function.
Syntax
unsigned int __return_address(void)
Return value
The __return_address intrinsic returns the value of the link register that
is used in returning from the current function.
Restrictions
The __return_address intrinsic does not
affect the ability of the compiler to perform optimizations such as inlining, tailcalling,
and code sharing. Where optimizations are made, the value returned by
__return_address reflects the optimizations performed:
- No optimization
When no optimizations are performed, the value returned by
__return_address from within a function foo() is the
return address of foo().
- Inline optimization
If a function foo() is inlined into a function bar()
then the value returned by __return_address from within
foo() is the return address of bar().
- Tail-call optimization
If a function foo() is tail-called from a function
bar() then the value returned by __return_address
from within foo() is the return address of
bar().
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