[Bug target/38366] gcc doesn't call functions that are struct arguments correctly

[ktietz at gcc dot gnu dot org]

------- Comment #3 from ktietz at gcc dot gnu dot org  2008-12-02 11:37 -------
Created an attachment (id=16809)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16809&action=view)
Patch file

I can reproduce it and the patch here should solve it.
The main reason is in i386 target ix86_reg_parm_stack_space(), which defaults
for NULL_TREE fndecl to cfun, which is wrong in this context.
Additionally init_cumulative_args() should verify first the fndecl and just
when not present the fntype.
In middle-end there is compute_argument_addresses() (calls.c), which needs as
fallback the fntype passed for proper call of aggregate_value_p().

The part in function.c could be superflous.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38366