Behan Webster <beh...@converseincode.com> writes: > On 02/12/14 13:11, Christoph Hellwig wrote: >> On Wed, Feb 12, 2014 at 09:58:46PM +0100, dl...@gmx.de wrote: >>> being able to compile the Linux kernel with Clang. The use of nested >>> functions >>> blocks this effort. >> Is there any good way to make gcc warn about the use of nested functions? > Interesting idea. > > '-Wtrampolines' > Warn about trampolines generated for pointers to nested functions. > > A trampoline is a small piece of data or code that is created at > run time on the stack when the address of a nested function is > taken, and is used to call the nested function indirectly. For > some targets, it is made up of data only and thus requires no > special treatment. But, for most targets, it is made up of code > and thus requires the stack to be made executable in order for the > program to work properly. > > That might work.
That sounds like it will only warn if a trampoline is needed. A nested function whose address isn't taken, as is the case here, wouldn't trigger this warning. -- Måns Rullgård m...@mansr.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
