http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46268
Summary: gengtype warning when GTY(()) markers have no effect
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: dnovi...@gcc.gnu.org
Recently I was adding GTY markers to new structures but had forgotten to
declare a GC root variable. This was causing gengtype to ignore the structure,
which meant that no ggc_alloc_cleared_XXX function was generated. This caused
a failure during stage 2 when the compiler warned that no such function had
been declared.
The warning is removed from the immediate cause. If gengtype had warned me
that I was adding a useless GTY marker, it would have made it easier to fix.
Additionally, the automatic generation of the ggc_... function family is not
very clearly documented in doc/gty.texi.
