https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25967
--- Comment #15 from Uroš Bizjak <ubizjak at gmail dot com> ---
Please also note this description from the gcc docs:
'naked'
This attribute allows the compiler to construct the requisite
function declaration, while allowing the body of the function to be
assembly code. The specified function will not have
prologue/epilogue sequences generated by the compiler. Only basic
'asm' statements can safely be included in naked functions (*note
Basic Asm::). While using extended 'asm' or a mixture of basic
'asm' and C code may appear to work, they cannot be depended upon
to work reliably and are not supported.
