diff options
3 files changed, 104 insertions, 34 deletions
diff --git a/compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs b/compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs index f683832e3df..845b5791161 100644 --- a/compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs +++ b/compiler/rustc_symbol_mangling/src/typeid/typeid_itanium_cxx_abi.rs @@ -7,10 +7,10 @@ /// /// For more information about LLVM CFI and cross-language LLVM CFI support for the Rust compiler, /// see design document in the tracking issue #89653. -use core::fmt::Display; use rustc_data_structures::base_n; use rustc_data_structures::fx::FxHashMap; use rustc_hir as hir; +use rustc_middle::ty::layout::IntegerExt; use rustc_middle::ty::{ self, Const, ExistentialPredicate, FloatTy, FnSig, Instance, IntTy, List, Region, RegionKind, TermKind, Ty, TyCtxt, UintTy, @@ -19,6 +19,7 @@ use rustc_middle::ty::{GenericArg, GenericArgKind, GenericArgsRef}; use rustc_span::def_id::DefId; use rustc_span::sym; use rustc_target::abi::call::{Conv, FnAbi}; +use rustc_target::abi::Integer; use rustc_target::spec::abi::Abi; use std::fmt::Write as _; @@ -93,44 +94,54 @@ fn encode_const<'tcx>( dict: &mut FxHashMap<DictKey<'tcx>, usize>, options: EncodeTyOptions, ) -> String { - // L<element-type>[n]<element-value>E as literal argument + // L<element-type>[n][<element-value>]E as literal argument let mut s = String::from('L'); - // Element type - s.push_str(&encode_ty(tcx, c.ty(), dict, options)); + match c.kind() { + // Const parameters + ty::ConstKind::Param(..) => { + // L<element-type>E as literal argument - // The only allowed types of const parameters are bool, u8, u16, u32, u64, u128, usize i8, i16, - // i32, i64, i128, isize, and char. The bool value false is encoded as 0 and true as 1. - fn push_signed_value<T: Display + PartialOrd>(s: &mut String, value: T, zero: T) { - if value < zero { - s.push('n') - }; - let _ = write!(s, "{value}"); - } - - fn push_unsigned_value<T: Display>(s: &mut String, value: T) { - let _ = write!(s, "{value}"); - } + // Element type + s.push_str(&encode_ty(tcx, c.ty(), dict, options)); + } - if let Some(scalar_int) = c.try_to_scalar_int() { - let signed = c.ty().is_signed(); - match scalar_int.size().bits() { - 8 if signed => push_signed_value(&mut s, scalar_int.try_to_i8().unwrap(), 0), - 16 if signed => push_signed_value(&mut s, scalar_int.try_to_i16().unwrap(), 0), - 32 if signed => push_signed_value(&mut s, scalar_int.try_to_i32().unwrap(), 0), - 64 if signed => push_signed_value(&mut s, scalar_int.try_to_i64().unwrap(), 0), - 128 if signed => push_signed_value(&mut s, scalar_int.try_to_i128().unwrap(), 0), - 8 => push_unsigned_value(&mut s, scalar_int.try_to_u8().unwrap()), - 16 => push_unsigned_value(&mut s, scalar_int.try_to_u16().unwrap()), - 32 => push_unsigned_value(&mut s, scalar_int.try_to_u32().unwrap()), - 64 => push_unsigned_value(&mut s, scalar_int.try_to_u64().unwrap()), - 128 => push_unsigned_value(&mut s, scalar_int.try_to_u128().unwrap()), - _ => { - bug!("encode_const: unexpected size `{:?}`", scalar_int.size().bits()); + // Literal arguments + ty::ConstKind::Value(..) => { + // L<element-type>[n]<element-value>E as literal argument + + // Element type + s.push_str(&encode_ty(tcx, c.ty(), dict, options)); + + // The only allowed types of const values are bool, u8, u16, u32, + // u64, u128, usize i8, i16, i32, i64, i128, isize, and char. The + // bool value false is encoded as 0 and true as 1. + match c.ty().kind() { + ty::Int(ity) => { + let bits = c.eval_bits(tcx, ty::ParamEnv::reveal_all(), c.ty()); + let val = Integer::from_int_ty(&tcx, *ity).size().sign_extend(bits) as i128; + if val < 0 { + s.push('n'); + } + let _ = write!(s, "{val}"); + } + ty::Uint(_) => { + let val = c.eval_bits(tcx, ty::ParamEnv::reveal_all(), c.ty()); + let _ = write!(s, "{val}"); + } + ty::Bool => { + let val = c.try_eval_bool(tcx, ty::ParamEnv::reveal_all()).unwrap(); + let _ = write!(s, "{val}"); + } + _ => { + bug!("encode_const: unexpected type `{:?}`", c.ty()); + } } - }; - } else { - bug!("encode_const: unexpected type `{:?}`", c.ty()); + } + + _ => { + bug!("encode_const: unexpected kind `{:?}`", c.kind()); + } } // Close the "L..E" pair diff --git a/tests/codegen/sanitizer-cfi-emit-type-metadata-trait-objects.rs b/tests/codegen/sanitizer-cfi-emit-type-metadata-trait-objects.rs index 0f79adab7bd..d24e416b67e 100644 --- a/tests/codegen/sanitizer-cfi-emit-type-metadata-trait-objects.rs +++ b/tests/codegen/sanitizer-cfi-emit-type-metadata-trait-objects.rs @@ -53,6 +53,18 @@ impl<'a, T, U> Trait4<'a, U> for T { } } +pub trait Trait5<T, const N: usize> { + fn quux(&self, _: &[T; N]); +} + +#[derive(Copy, Clone)] +pub struct Type5; + +impl<T, U, const N: usize> Trait5<U, N> for T { + fn quux(&self, _: &[U; N]) { + } +} + pub fn foo1(a: &dyn Trait1) { a.foo(); // CHECK-LABEL: define{{.*}}4foo1{{.*}}!type !{{[0-9]+}} @@ -114,7 +126,24 @@ pub fn bar4<'a>() { // CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%[0-9]}}, metadata !"[[TYPE4:[[:print:]]+]]") } +pub fn foo5(a: &dyn Trait5<Type5, 32>) { + let b = &[Type5; 32]; + a.quux(&b); + // CHECK-LABEL: define{{.*}}4foo5{{.*}}!type !{{[0-9]+}} + // CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%[0-9]}}, metadata !"[[TYPE5:[[:print:]]+]]") +} + +pub fn bar5() { + let a = &[Type5; 32]; + foo5(&a); + let b = &a as &dyn Trait5<Type5, 32>; + b.quux(&a); + // CHECK-LABEL: define{{.*}}4bar5{{.*}}!type !{{[0-9]+}} + // CHECK: call i1 @llvm.type.test({{i8\*|ptr}} {{%f|%[0-9]}}, metadata !"[[TYPE5:[[:print:]]+]]") +} + // CHECK: !{{[0-9]+}} = !{i64 0, !"[[TYPE1]]"} // CHECK: !{{[0-9]+}} = !{i64 0, !"[[TYPE2]]"} // CHECK: !{{[0-9]+}} = !{i64 0, !"[[TYPE3]]"} // CHECK: !{{[0-9]+}} = !{i64 0, !"[[TYPE4]]"} +// CHECK: !{{[0-9]+}} = !{i64 0, !"[[TYPE5]]"} diff --git a/tests/codegen/sanitizer-kcfi-emit-type-metadata-trait-objects.rs b/tests/codegen/sanitizer-kcfi-emit-type-metadata-trait-objects.rs index 004a67e7df2..78ecc187b8e 100644 --- a/tests/codegen/sanitizer-kcfi-emit-type-metadata-trait-objects.rs +++ b/tests/codegen/sanitizer-kcfi-emit-type-metadata-trait-objects.rs @@ -77,6 +77,19 @@ impl<'a, T, U> Trait4<'a, U> for T { } } +pub trait Trait5<T, const N: usize> { + fn quux(&self, _: &[T; N]); +} + +pub struct Type5; + +impl Copy for Type5 {} + +impl<T, U, const N: usize> Trait5<U, N> for T { + fn quux(&self, _: &[U; N]) { + } +} + pub fn foo1(a: &dyn Trait1) { a.foo(); // CHECK-LABEL: define{{.*}}4foo1{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}} @@ -138,7 +151,24 @@ pub fn bar4<'a>() { // CHECK: call align 4 {{ptr|i32\*}} %{{[0-9]}}({{\{\}\*|ptr}} align 1 {{%[a-z]\.0|%_[0-9]}}, {{\{\}\*|ptr|%Type4\*}} align 1 {{%[a-z]\.0|%_[0-9]}}){{.*}}[ "kcfi"(i32 [[TYPE4:[[:print:]]+]]) ] } +pub fn foo5(a: &dyn Trait5<Type5, 32>) { + let b = &[Type5; 32]; + a.quux(&b); + // CHECK-LABEL: define{{.*}}4foo5{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}} + // CHECK: call void %{{[0-9]}}({{\{\}\*|ptr}} align 1 {{%[a-z](\.0)*|%_[0-9]+]}}, {{\{\}\*|ptr|\[32 x %Type5\]\*}} align 1 {{%[a-z](\.0)*|%_[0-9]+}}){{.*}}[ "kcfi"(i32 [[TYPE5:[[:print:]]+]]) ] +} + +pub fn bar5() { + let a = &[Type5; 32]; + foo5(&a); + let b = &a as &dyn Trait5<Type5, 32>; + b.quux(&a); + // CHECK-LABEL: define{{.*}}4bar5{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}} + // CHECK: call void %{{[0-9]}}({{\{\}\*|ptr}} align 1 {{%[a-z](\.0)*|%_[0-9]+]}}, {{\{\}\*|ptr|\[32 x %Type5\]\*}} align 1 {{%[a-z](\.0)*|%_[0-9]+}}){{.*}}[ "kcfi"(i32 [[TYPE5:[[:print:]]+]]) ] +} + // CHECK: !{{[0-9]+}} = !{i32 [[TYPE1]]} // CHECK: !{{[0-9]+}} = !{i32 [[TYPE2]]} // CHECK: !{{[0-9]+}} = !{i32 [[TYPE3]]} // CHECK: !{{[0-9]+}} = !{i32 [[TYPE4]]} +// CHECK: !{{[0-9]+}} = !{i32 [[TYPE5]]} |