diff --git a/lib/checkuninitvar.cpp b/lib/checkuninitvar.cpp
index d271614723e..dccce6ad348 100644
--- a/lib/checkuninitvar.cpp
+++ b/lib/checkuninitvar.cpp
@@ -965,7 +965,7 @@ const Token* CheckUninitVar::checkLoopBodyRecursive(const Token *start, const Va
                 return nullptr;
             }
 
-            bool alwaysReturnsUnused;
+            bool alwaysReturnsUnused = false;
             const Token *errorToken1 = checkLoopBodyRecursive(tok, var, alloc, membervar, bailout, alwaysReturnsUnused);
             tok = tok->link();
             if (Token::simpleMatch(tok, "} else {")) {
diff --git a/test/cli/fuzz-crash_c/crash-8367ada820697bc89f56262df59bdf457b62c808 b/test/cli/fuzz-crash_c/crash-8367ada820697bc89f56262df59bdf457b62c808
new file mode 100644
index 00000000000..08345550d64
--- /dev/null
+++ b/test/cli/fuzz-crash_c/crash-8367ada820697bc89f56262df59bdf457b62c808
@@ -0,0 +1 @@
+i(){s a;for(;;)y{for(;;);};}