gccrs: Fix ICE when emitting an error during cfg strip

When an error was emitted during the cfg strip pass by the crate loader,
it was ignored and the error state propagated until another pass
(name resolver).

gcc/rust/ChangeLog:

	* rust-session-manager.cc (Session::expansion): Add early break on
	error.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

diff --git a/gcc/rust/rust-session-manager.cc b/gcc/rust/rust-session-manager.cc
index 1273b53496c660af2d3c360757102ff9e11bf705..3edd1ecb4ebe79f85a9fec6e0be9d2f0f98e3a16 100644 (file)
--- a/gcc/rust/rust-session-manager.cc
+++ b/gcc/rust/rust-session-manager.cc
@@ -877,6 +877,9 @@ Session::expansion (AST::Crate &crate)
   while (!fixed_point_reached && iterations < cfg.recursion_limit)
     {
       CfgStrip ().go (crate);
+      // Errors might happen during cfg strip pass
+      if (saw_errors ())
+       break;
 
       auto ctx = Resolver2_0::NameResolutionContext ();