[COMMITTED 062/144] gccrs: Avoid accidental insertion into map

[arthur . cohen]

From: Owen Avery <powerboat9.ga...@gmail.com>

gcc/rust/ChangeLog:

        * resolve/rust-ast-resolve-pattern.cc
        (PatternDeclaration::check_bindings_consistency): Check if
        outer_bindings_map contains an entry before indexing.

Signed-off-by: Owen Avery <powerboat9.ga...@gmail.com>
---
 gcc/rust/resolve/rust-ast-resolve-pattern.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/rust/resolve/rust-ast-resolve-pattern.cc 
b/gcc/rust/resolve/rust-ast-resolve-pattern.cc
index 9b383b722c8..ee84be8942b 100644
--- a/gcc/rust/resolve/rust-ast-resolve-pattern.cc
+++ b/gcc/rust/resolve/rust-ast-resolve-pattern.cc
@@ -330,7 +330,8 @@ PatternDeclaration::check_bindings_consistency (
              if (!ident_is_outer_bound && !missing_bindings.count (ident))
                missing_bindings.insert ({ident, inner_info});
 
-             else if (outer_bindings_map[ident] != inner_info
+             else if (outer_bindings_map.count (ident)
+                      && outer_bindings_map[ident] != inner_info
                       && !inconsistent_bindings.count (ident))
                inconsistent_bindings.insert ({ident, inner_info});
            }
-- 
2.45.2