summaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
-rw-r--r--src/emu/validity.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/emu/validity.h b/src/emu/validity.h
index de599199b73..8460ee4a7c0 100644
--- a/src/emu/validity.h
+++ b/src/emu/validity.h
@@ -44,7 +44,7 @@ public:
// helpers for devices
void validate_tag(const char *tag);
- int region_length(const char *tag) { return m_region_map.find(tag)->second; }
+ int region_length(const char *tag) { auto i = m_region_map.find(tag); return i == m_region_map.end() ? 0 : i->second; }
// generic registry of already-checked stuff
bool already_checked(const char *string) { return !m_already_checked.insert(string).second; }