1 files changed, 193 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/errors.rs b/compiler/rustc_session/src/errors.rs
new file mode 100644
index 000000000..bf542faec
--- /dev/null
+++ b/compiler/rustc_session/src/errors.rs
@@ -0,0 +1,193 @@
+use std::num::NonZeroU32;
+
+use crate::cgu_reuse_tracker::CguReuse;
+use rustc_errors::MultiSpan;
+use rustc_macros::Diagnostic;
+use rustc_span::{Span, Symbol};
+use rustc_target::spec::{SplitDebuginfo, StackProtector, TargetTriple};
+
+#[derive(Diagnostic)]
+#[diag(session_incorrect_cgu_reuse_type)]
+pub struct IncorrectCguReuseType<'a> {
+    #[primary_span]
+    pub span: Span,
+    pub cgu_user_name: &'a str,
+    pub actual_reuse: CguReuse,
+    pub expected_reuse: CguReuse,
+    pub at_least: u8,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_cgu_not_recorded)]
+pub struct CguNotRecorded<'a> {
+    pub cgu_user_name: &'a str,
+    pub cgu_name: &'a str,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_feature_gate_error, code = "E0658")]
+pub struct FeatureGateError<'a> {
+    #[primary_span]
+    pub span: MultiSpan,
+    pub explain: &'a str,
+}
+
+#[derive(Subdiagnostic)]
+#[note(session_feature_diagnostic_for_issue)]
+pub struct FeatureDiagnosticForIssue {
+    pub n: NonZeroU32,
+}
+
+#[derive(Subdiagnostic)]
+#[help(session_feature_diagnostic_help)]
+pub struct FeatureDiagnosticHelp {
+    pub feature: Symbol,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_not_circumvent_feature)]
+pub struct NotCircumventFeature;
+
+#[derive(Diagnostic)]
+#[diag(session_linker_plugin_lto_windows_not_supported)]
+pub struct LinkerPluginToWindowsNotSupported;
+
+#[derive(Diagnostic)]
+#[diag(session_profile_use_file_does_not_exist)]
+pub struct ProfileUseFileDoesNotExist<'a> {
+    pub path: &'a std::path::Path,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_profile_sample_use_file_does_not_exist)]
+pub struct ProfileSampleUseFileDoesNotExist<'a> {
+    pub path: &'a std::path::Path,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_target_requires_unwind_tables)]
+pub struct TargetRequiresUnwindTables;
+
+#[derive(Diagnostic)]
+#[diag(session_sanitizer_not_supported)]
+pub struct SanitizerNotSupported {
+    pub us: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_sanitizers_not_supported)]
+pub struct SanitizersNotSupported {
+    pub us: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_cannot_mix_and_match_sanitizers)]
+pub struct CannotMixAndMatchSanitizers {
+    pub first: String,
+    pub second: String,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_cannot_enable_crt_static_linux)]
+pub struct CannotEnableCrtStaticLinux;
+
+#[derive(Diagnostic)]
+#[diag(session_sanitizer_cfi_enabled)]
+pub struct SanitizerCfiEnabled;
+
+#[derive(Diagnostic)]
+#[diag(session_unstable_virtual_function_elimination)]
+pub struct UnstableVirtualFunctionElimination;
+
+#[derive(Diagnostic)]
+#[diag(session_unsupported_dwarf_version)]
+pub struct UnsupportedDwarfVersion {
+    pub dwarf_version: u32,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_target_stack_protector_not_supported)]
+pub struct StackProtectorNotSupportedForTarget<'a> {
+    pub stack_protector: StackProtector,
+    pub target_triple: &'a TargetTriple,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_split_debuginfo_unstable_platform)]
+pub struct SplitDebugInfoUnstablePlatform {
+    pub debuginfo: SplitDebuginfo,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_file_is_not_writeable)]
+pub struct FileIsNotWriteable<'a> {
+    pub file: &'a std::path::Path,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_crate_name_does_not_match)]
+pub struct CrateNameDoesNotMatch<'a> {
+    #[primary_span]
+    pub span: Span,
+    pub s: &'a str,
+    pub name: Symbol,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_crate_name_invalid)]
+pub struct CrateNameInvalid<'a> {
+    pub s: &'a str,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_crate_name_empty)]
+pub struct CrateNameEmpty {
+    #[primary_span]
+    pub span: Option<Span>,
+}
+
+#[derive(Diagnostic)]
+#[diag(session_invalid_character_in_create_name)]
+pub struct InvalidCharacterInCrateName<'a> {
+    #[primary_span]
+    pub span: Option<Span>,
+    pub character: char,
+    pub crate_name: &'a str,
+}
+
+#[derive(Subdiagnostic)]
+#[multipart_suggestion(session_expr_parentheses_needed, applicability = "machine-applicable")]
+pub struct ExprParenthesesNeeded {
+    #[suggestion_part(code = "(")]
+    pub left: Span,
+    #[suggestion_part(code = ")")]
+    pub right: Span,
+}
+
+impl ExprParenthesesNeeded {
+    pub fn surrounding(s: Span) -> Self {
+        ExprParenthesesNeeded { left: s.shrink_to_lo(), right: s.shrink_to_hi() }
+    }
+}
+
+#[derive(Diagnostic)]
+#[diag(session_skipping_const_checks)]
+pub struct SkippingConstChecks {
+    #[subdiagnostic(eager)]
+    pub unleashed_features: Vec<UnleashedFeatureHelp>,
+}
+
+#[derive(Subdiagnostic)]
+pub enum UnleashedFeatureHelp {
+    #[help(session_unleashed_feature_help_named)]
+    Named {
+        #[primary_span]
+        span: Span,
+        gate: Symbol,
+    },
+    #[help(session_unleashed_feature_help_unnamed)]
+    Unnamed {
+        #[primary_span]
+        span: Span,
+    },
+}