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add -Zextra-const-ub-checks to enable more UB checking in const-eval

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This commit is contained in:
Ralf Jung 2022-08-07 08:30:03 -04:00
parent cc71eef498
commit be6bb56ee0
6 changed files with 131 additions and 0 deletions
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2
compiler/rustc_session/src/options.rs
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@ -1310,6 +1310,8 @@ options! {
"emit the bc module with thin LTO info (default: yes)"),
export_executable_symbols: bool = (false, parse_bool, [TRACKED],
"export symbols from executables, as if they were dynamic libraries"),
extra_const_ub_checks: bool = (false, parse_bool, [TRACKED],
"turns on more checks to detect const UB, which can be slow (default: no)"),
#[cfg_attr(not(bootstrap), rustc_lint_opt_deny_field_access("use `Session::fewer_names` instead of this field"))]
fewer_names: Option<bool> = (None, parse_opt_bool, [TRACKED],
"reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \