diff options
Diffstat (limited to 'gcc/rust/rust-lang.cc')
| -rw-r--r-- | gcc/rust/rust-lang.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/rust/rust-lang.cc b/gcc/rust/rust-lang.cc index 95c92f8..ed822cc 100644 --- a/gcc/rust/rust-lang.cc +++ b/gcc/rust/rust-lang.cc @@ -152,8 +152,14 @@ grs_langhook_option_lang_mask (void) /* Initialize the options structure. */ static void -grs_langhook_init_options_struct (struct gcc_options * /* opts */) +grs_langhook_init_options_struct (struct gcc_options *opts) { + /* Operations are always wrapping in Rust, even on signed integer. This is + * useful for the low level wrapping_{add, sub, mul} intrinsics, not for + * regular arithmetic operations which are checked for overflow anyway using + * builtins */ + opts->x_flag_wrapv = 1; + // nothing yet - used by frontends to change specific options for the language Rust::Session::get_instance ().init_options (); } |