Auto merge of #99054 - Dylan-DPC:rollup-0zuhhds, r=Dylan-DPC

Rollup of 4 pull requests

Successful merges:

 - #98533 (Add a `-Zdump-drop-tracking-cfg` debugging flag)
 - #98654 (An optimization for `pest-2.1.3`)
 - #98657 (Migrate some diagnostics from `rustc_const_eval` to `SessionDiagnostic`)
 - #98794 (Highlight conflicting param-env candidates)

Failed merges:

 - #98957 ( don't allow ZST in ScalarInt )

r? `@ghost`
`@rustbot` modify labels: rollup

1 files changed, 89 insertions, 0 deletions

diff --git a/compiler/rustc_const_eval/src/errors.rs b/compiler/rustc_const_eval/src/errors.rs
new file mode 100644
index 00000000000..a463fe7b970
--- /dev/null
+++ b/compiler/rustc_const_eval/src/errors.rs
@@ -0,0 +1,89 @@
+use rustc_hir::ConstContext;
+use rustc_macros::SessionDiagnostic;
+use rustc_span::Span;
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::unstable_in_stable)]
+pub(crate) struct UnstableInStable {
+    pub gate: String,
+    #[primary_span]
+    pub span: Span,
+    #[suggestion(
+        const_eval::unstable_sugg,
+        code = "#[rustc_const_unstable(feature = \"...\", issue = \"...\")]\n",
+        applicability = "has-placeholders"
+    )]
+    #[suggestion(
+        const_eval::bypass_sugg,
+        code = "#[rustc_allow_const_fn_unstable({gate})]\n",
+        applicability = "has-placeholders"
+    )]
+    pub attr_span: Span,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::thread_local_access, code = "E0625")]
+pub(crate) struct NonConstOpErr {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::static_access, code = "E0013")]
+#[help]
+pub(crate) struct StaticAccessErr {
+    #[primary_span]
+    pub span: Span,
+    pub kind: ConstContext,
+    #[note(const_eval::teach_note)]
+    #[help(const_eval::teach_help)]
+    pub teach: Option<()>,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::raw_ptr_to_int)]
+#[note]
+#[note(const_eval::note2)]
+pub(crate) struct RawPtrToIntErr {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::raw_ptr_comparison)]
+#[note]
+pub(crate) struct RawPtrComparisonErr {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::panic_non_str)]
+pub(crate) struct PanicNonStrErr {
+    #[primary_span]
+    pub span: Span,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::mut_deref, code = "E0658")]
+pub(crate) struct MutDerefErr {
+    #[primary_span]
+    pub span: Span,
+    pub kind: ConstContext,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::transient_mut_borrow, code = "E0658")]
+pub(crate) struct TransientMutBorrowErr {
+    #[primary_span]
+    pub span: Span,
+    pub kind: ConstContext,
+}
+
+#[derive(SessionDiagnostic)]
+#[error(const_eval::transient_mut_borrow_raw, code = "E0658")]
+pub(crate) struct TransientMutBorrowErrRaw {
+    #[primary_span]
+    pub span: Span,
+    pub kind: ConstContext,
+}