initLibUtil: Add exception handling self-check

1 files changed, 5 insertions, 0 deletions

diff --git a/src/libutil/error.cc b/src/libutil/error.cc
index c9d61942a..4a1b346ef 100644
--- a/src/libutil/error.cc
+++ b/src/libutil/error.cc
@@ -14,6 +14,11 @@ void BaseError::addTrace(std::shared_ptr<AbstractPos> && e, hintformat hint, boo
     err.traces.push_front(Trace { .pos = std::move(e), .hint = hint, .frame = frame });
 }
 
+void throwExceptionSelfCheck(){
+    // This is meant to be caught in initLibUtil()
+    throw SysError("C++ exception handling is broken. This would appear to be a problem with the way Nix was compiled and/or linked and/or loaded.");
+}
+
 // c++ std::exception descendants must have a 'const char* what()' function.
 // This stringifies the error and caches it for use by what(), or similarly by msg().
 const std::string & BaseError::calcWhat() const