https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111650
Bug ID: 111650 Summary: ICE in build_deref, at d/d-codegen.cc:1650 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: d Assignee: ibuclaw at gdcproject dot org Reporter: arsen at gcc dot gnu.org Target Milestone: --- Created attachment 56020 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56020&action=edit reduced reproducer, reduced from btdu the attached code, with gdc -c <file>, produces the following ICE: ~/gcc/d-ice$ /usr/x86_64-pc-linux-gnu/gcc-bin/14/gdc -c reduced.reduced/btdu/sample.d reduced.reduced/btdu/sample.d: In function ‘__lambda3’: reduced.reduced/btdu/sample.d:12:22: internal compiler error: in build_deref, at d/d-codegen.cc:1650 12 | Root result; | ^ 0x55e60d72b7b0 build_deref(tree_node*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/d-codegen.cc:1650 0x55e60df1a6c6 declare_local_var(VarDeclaration*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:1637 0x55e60df1a9fd DeclVisitor::visit(VarDeclaration*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:850 0x55e60defff7f DeclVisitor::build_dsymbol(Dsymbol*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:254 0x55e60defff7f build_decl_tree(Dsymbol*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:1092 0x55e60df39c39 ExprVisitor::visit(DeclarationExp*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/expr.cc:1946 0x55e60df20560 build_expr(Expression*, bool, bool) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/expr.cc:3025 0x55e60df21a8b build_expr_dtor(Expression*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/expr.cc:3048 0x55e60df29531 IRVisitor::visit(ExpStatement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1076 0x55e60df207ef IRVisitor::build_stmt(Statement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:274 0x55e60df207ef IRVisitor::visit(CompoundStatement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1093 0x55e60df207ef IRVisitor::visit(CompoundStatement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1083 0x55e60df207ef IRVisitor::build_stmt(Statement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:274 0x55e60df207ef IRVisitor::visit(CompoundStatement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1093 0x55e60df207ef IRVisitor::visit(CompoundStatement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1083 0x55e60df2088f IRVisitor::build_stmt(Statement*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:274 0x55e60df2088f build_function_body(FuncDeclaration*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/toir.cc:1505 0x55e60df1b271 DeclVisitor::visit(FuncDeclaration*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:1051 0x55e60defff7f DeclVisitor::build_dsymbol(Dsymbol*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:254 0x55e60defff7f build_decl_tree(Dsymbol*) /usr/src/debug/sys-devel/gcc-14.0.0_pre20230924/gcc-14-20230924/gcc/d/decl.cc:1092 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://bugs.gentoo.org/> for instructions. ~/gcc/d-ice 1 $ testcase reduced from https://github.com/CyberShadow/btdu it is possible the reduction went awry, but the backtrace is identical before and after reduction, so I hope it still homes in on the same bug I've very little experience with D, so, apologies for the lack of analysis or additional information.