https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117832
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Iain Buclaw <ibuc...@gcc.gnu.org>: https://gcc.gnu.org/g:3e3b665cc77791f2e088aeee124d8a9fb7f6eb41 commit r15-9333-g3e3b665cc77791f2e088aeee124d8a9fb7f6eb41 Author: Iain Buclaw <ibuc...@gdcproject.org> Date: Wed Apr 9 14:49:14 2025 +0200 d: Use CONSTRUCTOR_ZERO_PADDING_BITS in the D FE [PR117832] Adds a new wrapper function for `build_constructor', and calls it instead to ensure that all CONSTRUCTOR nodes explicitly created by the front-end have CONSTRUCTOR_ZERO_PADDING_BITS set. Some places may not be necessary as it's guaranteed for there to be no padding in the type, such as D dynamic arrays. Other places this gets turned into a double-memset when optimizations are turned off, as the front-end already generates a memset call to zero out all padding on initializing a variable. The optimizer sees through this so will correctly clear all bits once, so this can be improved later as-needed. PR d/117832 gcc/d/ChangeLog: * d-tree.h (build_padded_constructor): New prototype. * d-codegen.cc (build_padded_constructor): New function. (d_array_value): Call it. (build_memset_call): Likewise. (build_struct_literal): Likewise. (underlying_complex_expr): Likewise. (build_array_from_val): Likewise. (build_array_from_exprs): Likewise. (d_build_call): Likewise. (get_frame_for_symbol): Likewise. * d-convert.cc (convert_for_rvalue): Likewise. (convert_for_assignment): Likewise. * decl.cc (class DeclVisitor): Likewise. * expr.cc (class ExprVisitor): Likewise. * modules.cc (layout_moduleinfo): Likewise. * typeinfo.cc (class TypeInfoVisitor): Likewise.
