From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../rustc_error_codes/src/error_codes/E0275.md | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 compiler/rustc_error_codes/src/error_codes/E0275.md (limited to 'compiler/rustc_error_codes/src/error_codes/E0275.md') diff --git a/compiler/rustc_error_codes/src/error_codes/E0275.md b/compiler/rustc_error_codes/src/error_codes/E0275.md new file mode 100644 index 000000000..2d12fcea4 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0275.md @@ -0,0 +1,22 @@ +An evaluation of a trait requirement overflowed. + +Erroneous code example: + +```compile_fail,E0275 +trait Foo {} + +struct Bar(T); + +impl Foo for T where Bar: Foo {} +``` + +This error occurs when there was a recursive trait requirement that overflowed +before it could be evaluated. This often means that there is an unbounded +recursion in resolving some type bounds. + +To determine if a `T` is `Foo`, we need to check if `Bar` is `Foo`. However, +to do this check, we need to determine that `Bar>` is `Foo`. To +determine this, we check if `Bar>>` is `Foo`, and so on. This is +clearly a recursive requirement that can't be resolved directly. + +Consider changing your trait bounds so that they're less self-referential. -- cgit v1.2.3