gccrs: enable -Winfinite-recursion warnings by default

gcc/rust/ChangeLog:

	* lang.opt: add lang option flag
	* rust-lang.cc (grs_langhook_init_options_struct): enable by default

Signed-off-by: Philip Herron <herron.philip@googlemail.com>

diff --git a/gcc/rust/lang.opt b/gcc/rust/lang.opt
index 1c3b5b0dbf2fb8b734b49323a3382107036a4dfd..3a5981e4c852e8c2d88db09ef1742bbdf7244db9 100644 (file)
--- a/gcc/rust/lang.opt
+++ b/gcc/rust/lang.opt
@@ -54,6 +54,10 @@ Wunused-result
 Rust Var(warn_unused_result) Warning
 Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value.
 
+Winfinite-recursion
+Rust Var(warn_infinite_recursion) Warning
+Warn for infinitely recursive calls.
+
 frust-crate=
 Rust Joined RejectNegative
 -frust-crate=<name>             Set the crate name for the compilation

diff --git a/gcc/rust/rust-lang.cc b/gcc/rust/rust-lang.cc
index f61d315ae5079646a8fcf8e8186abd2971b9e085..084f74c9121de83a5c70467876e8cc84ff6e7a33 100644 (file)
--- a/gcc/rust/rust-lang.cc
+++ b/gcc/rust/rust-lang.cc
@@ -159,6 +159,8 @@ grs_langhook_init_options_struct (struct gcc_options *opts)
   opts->x_warn_unused_const_variable = 1;
   /* And finally unused result for #[must_use] */
   opts->x_warn_unused_result = 1;
+  /* lets warn for infinite recursion*/
+  opts->x_warn_infinite_recursion = 1;
 
   // nothing yet - used by frontends to change specific options for the language
   Rust::Session::get_instance ().init_options ();