rust: add support for b_ndebug

Rust has a `debug_assert!()` macro, which is designed to be toggled on
the command line. It is on by default in debug builds, and off by
default in release builds, in cargo. This matches what meson's b_ndebug
option does in `if-release` mode.

1 files changed, 5 insertions, 1 deletions

diff --git a/mesonbuild/compilers/rust.py b/mesonbuild/compilers/rust.py
index 1c43f7a..3f353e2 100644
--- a/mesonbuild/compilers/rust.py
+++ b/mesonbuild/compilers/rust.py
@@ -63,7 +63,7 @@ class RustCompiler(Compiler):
                          is_cross=is_cross, full_version=full_version,
                          linker=linker)
         self.exe_wrapper = exe_wrapper
-        self.base_options.add(OptionKey('b_colorout'))
+        self.base_options.update({OptionKey(o) for o in ['b_colorout', 'b_ndebug']})
         if 'link' in self.linker.id:
             self.base_options.add(OptionKey('b_vscrt'))
 
@@ -204,6 +204,10 @@ class RustCompiler(Compiler):
         # pic is on by rustc
         return []
 
+    def get_assert_args(self, disable: bool) -> T.List[str]:
+        action = "no" if disable else "yes"
+        return ['-C', f'debug-assertions={action}']
+
 
 class ClippyRustCompiler(RustCompiler):