[Bug c++/115434] New: Post contracts are ignored on functions with no return statement.

[Bug c++/115434] New: Post contracts are ignored on functions with no return statement.

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115434

            Bug ID: 115434
           Summary: Post contracts are ignored on functions with no return
                    statement.
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: iains at gcc dot gnu.org
  Target Milestone: ---

This applies to void functions and coroutines (which usually have a return
object but do not have a return statement).

e.g:
void foo (const int b) pre ( b == 9 )  // contract checked
{}
int main()
{
   foo(3);
}

void foo (const int b) post ( b == 9 )  // contract not checked
{}
int main()
{
   foo(3);
}

int foo (const int b) post ( b == 9 )  // contract checked
{
  return 1;
}
int main()
{
   foo(3);
}

======

I was expecting the original function body to be wrapped in a try/finally block
with the post function as the cleanup.  Same back to 13.3 so it does not appear
to be a regression.

[Bug c++/115434] Post contracts are ignored on functions with no return statement.

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115434

--- Comment #1 from Iain Sandoe <iains at gcc dot gnu.org> ---
note that the example uses the new syntax, but the issue applies equally to the
attribute syntax in trunk.

[Bug c++/115434] Post contracts are ignored on functions with no return statement.

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115434

Iain Sandoe <iains at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                URL|                            |https://gcc.gnu.org/piperma
                   |                            |il/gcc-patches/2024-June/65
                   |                            |4848.html
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-06-23
           Assignee|unassigned at gcc dot gnu.org      |iains at gcc dot gnu.org