[issue18090] dict_contains first argument declared register, and shouldn't be
Stefan Krah
report at bugs.python.org
Thu May 30 20:03:34 CEST 2013
Stefan Krah added the comment:
+1 for removing all occurrences of "register".
Regarding the grammar, we have:
function-definition:
declaration-specifiers-opt declarator declaration-list-opt compound-statement
So I think that "part of an external declaration" refers to the outermost
declaration-specifiers, not to some inner declaration-specifiers that are
part of the parameter-type-list. Otherwise it would also be forbidden to
use "register" in the compound-statement. ;)
Thus, IMO this is legal:
a) int f (register int x) {return x;}
But this is not allowed:
b) register int f (int x) {return x;}
As Mark said, a) does not alter the calling convention. It's just a request
to keep x in a register in the function body once the parameter passing is
done.
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nosy: +skrah
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