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Re: [Patch, Fortran] PR54301 - add warning for pointer might outlive its target
Hi Thomas,
Thomas Koenig wrote:
do you think that -Wtarget-lifetime should be included with -Wall?
I think so, because the code flagged is certainly invalid, and likely
to cause random errors.
I concur. However, that's what the current version in the trunk does:
-Wall implies -Wtarget-lifetime.
On the other hand, I just realized that "attr.result" is not set if the
function symbols is also its result symbol â hence, there is no warning for:
function f()
integer, pointer :: f
integer, target :: t
f => t
end
I think the following patch will fix that. I will package, regtest and
commit it later.
Tobias
--- a/gcc/fortran/expr.c
+++ b/gcc/fortran/expr.c
@@ -3673,6 +3673,7 @@ gfc_check_pointer_assign (gfc_expr *lvalue,
gfc_expr *rvalue)
warn = lvalue->symtree->n.sym->attr.dummy
|| lvalue->symtree->n.sym->attr.result
+ || lvalue->symtree->n.sym->attr.function
|| lvalue->symtree->n.sym->attr.host_assoc
|| lvalue->symtree->n.sym->attr.use_assoc
|| lvalue->symtree->n.sym->attr.in_common;