repl: do not crash on async op reject (#3527)

2 files changed, 12 insertions, 0 deletions

diff --git a/core/libdeno/api.cc b/core/libdeno/api.cc
index 1ded39e1b..08e8a6de9 100644
--- a/core/libdeno/api.cc
+++ b/core/libdeno/api.cc
@@ -138,6 +138,12 @@ const char* deno_last_exception(Deno* d_) {
   }
 }
 
+void deno_clear_last_exception(Deno* d_) {
+  auto* d = deno::unwrap(d_);
+  d->last_exception_.clear();
+  d->last_exception_handle_.Reset();
+}
+
 void deno_execute(Deno* d_, void* user_data, const char* js_filename,
                   const char* js_source) {
   auto* d = deno::unwrap(d_);
diff --git a/core/libdeno/deno.h b/core/libdeno/deno.h
index 946978e3b..fd48abc5a 100644
--- a/core/libdeno/deno.h
+++ b/core/libdeno/deno.h
@@ -117,8 +117,14 @@ void deno_pinned_buf_delete(deno_pinned_buf* buf);
 
 void deno_check_promise_errors(Deno* d);
 
+// Returns a cstring pointer to the exception.
+// Rust side must NOT assert ownership.
 const char* deno_last_exception(Deno* d);
 
+// Clears last exception.
+// Rust side must NOT hold pointer to exception string when called.
+void deno_clear_last_exception(Deno* d_);
+
 void deno_terminate_execution(Deno* d);
 
 void deno_run_microtasks(Deno* d, void* user_data);