Combined unused lints - #4797
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gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (BoolLiteral): New. (ConstantTruth): New. (UnusedChecker::visit): New. * checks/lints/unused/rust-unused-checker.h (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused. gcc/testsuite/ChangeLog: * rust/compile/while-true_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (UnusedChecker::visit): New. * checks/lints/unused/rust-unused-checker.h (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused_value. gcc/testsuite/ChangeLog: * rust/compile/path-statements_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused. gcc/testsuite/ChangeLog: * rust/compile/unreachable-patterns_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (UnusedChecker::visit): New. * checks/lints/unused/rust-unused-checker.h (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_type_limits. gcc/testsuite/ChangeLog: * rust/compile/unused-comparisons_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (is_numeric): New. (UnusedChecker::visit): New. * checks/lints/unused/rust-unused-checker.h (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused. gcc/testsuite/ChangeLog: * rust/compile/trivial-numeric-casts_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
Warn on bounds applied to the generic parameters of a type alias, as those bounds are not enforced. gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (UnusedChecker::visit): New. * checks/lints/unused/rust-unused-checker.h (UnusedChecker::visit): New. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused. gcc/testsuite/ChangeLog: * rust/compile/type-alias-bounds_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
Warn when two range patterns in a match overlap on a single endpoint, for example `0..=5` and `5..=10` which both match `5`. gcc/rust/ChangeLog: * checks/lints/unused/rust-unused-checker.cc (UnusedChecker::visit(HIR::MatchExpr)): Warn on overlapping range endpoints. * rust-lang.cc (grs_langhook_init_options_struct): Enable warn_unused. gcc/testsuite/ChangeLog: * rust/compile/overlapping-range-endpoints_0.rs: New test. Signed-off-by: Lucas Ly Ba <lucas.ly-ba@outlook.com>
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As requested by @philberty on #4639, a single PR combining #4622, #4623, #4624, #4626, #4629, #4639 and #4642