a8e6360765
This polishes a few rough edges that prevent -ftrivial-auto-var-init=zero
from working in Ada:
- build_common_builtin_nodes declares BUILT_IN_CLEAR_PADDING with 3
instead 2 parameters, now gimple_fold_builtin_clear_padding contains
the assertion:
gcc_assert (gimple_call_num_args (stmt) == 2)
This causes gimple_builtin_call_types_compatible_p to always return false
in Ada (this works in C/C++ because another declaration is used).
- gimple_add_init_for_auto_var uses EXPR_LOCATION to fetch the location
of a DECL node, which always returns UNKNOWN_LOCATION.
- the machinery attempts to initialize Out parameters.
gcc/
PR middle-end/116933
* gimplify.cc (gimple_add_init_for_auto_var): Use the correct macro
to fetch the source location of the variable.
* tree.cc (common_builtin_nodes): Remove the 3rd parameter in the
type of BUILT_IN_CLEAR_PADDING.
gcc/ada/
PR middle-end/116933
* gcc-interface/decl.cc (gnat_to_gnu_entity) <E_Out_Parameter>: Add
the "uninitialized" attribute on Out parameters.
* gcc-interface/utils.cc (gnat_internal_attributes): Add entry for
the "uninitialized" attribute.
(handle_uninitialized_attribute): New function.
gcc/testsuite/
* gnat.dg/auto_var_init.adb: New test.
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