Fix a null pointer dereference if dladdr is unable to find a symbol n…

…ame (flutter#23970)
CaiJingLong · Jan 27, 2021 · e3e413e · e3e413e
1 parent 696c871
commit e3e413e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/fml/backtrace.cc b/fml/backtrace.cc
@@ -50,6 +50,9 @@ static std::string GetSymbolName(void* symbol) {
   if (::dladdr(symbol, &info) == 0) {
     return kKUnknownFrameName;
   }
+  if (info.dli_sname == nullptr) {
+    return kKUnknownFrameName;
+  }
 
   return DemangleSymbolName({info.dli_sname});
 }