https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70214
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
leaf
Calls to external functions with this attribute must return to the current
compilation unit only by return or by exception handling. In particular, leaf
functions are not allowed to call callback function passed to it from the
current compilation unit or directly call functions exported by the unit or
longjmp into the unit. Leaf function might still call functions from other
compilation units and thus they are not necessarily leaf in the sense that they
contain no function calls at all.
This is not a GCC bug; if it is a bug it is a glibc bug applying the leaf
attribute. But note I doubt it since it is a signal, you should have declared
tst as volatile.
