const_prop: only call error_to_const_error if we are actually showing something #63958
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const_prop: only call error_to_const_error if we are actually showing something This makes `RUSTC_CTFE_BACKTRACE` useful again. r? @oli-obk Fixes rust-lang#63439
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Rollup of 11 pull requests Successful merges: - #63811 (Correctly suggest adding bounds to `impl Trait` argument) - #63933 (Resolve some small issues related to #63580) - #63938 (or-pattern: fix typo in error message) - #63945 (Recover `mut $pat` and other improvements) - #63958 (const_prop: only call error_to_const_error if we are actually showing something) - #63961 (Add Option<Span> to `require_lang_item`) - #63963 (remove the reference to __cxa_thread_atexit_impl) - #63965 (Prevent syntax error in LD linker version script) - #63968 (rustc_apfloat: make the crate #![no_std] explicitly.) - #63970 (Notify me (flip1995) when Clippy toolstate changes) - #63980 (add missing `#[repr(C)]` on the Slices union) Failed merges: - #63989 (Add Yaah to clippy toolstain notification list) r? @ghost
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This makes
RUSTC_CTFE_BACKTRACEuseful again.r? @oli-obk
Fixes #63439