nit: more informative crash when grammar sampler fails (ggerganov#11593)

ngxson · Feb 2, 2025 · 90f9b88 · 90f9b88
1 parent 864a0b6
commit 90f9b88
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/llama-grammar.cpp b/src/llama-grammar.cpp
@@ -1213,5 +1213,7 @@ void llama_grammar_accept_str(struct llama_grammar & grammar, const std::string
     }
 
     grammar.partial_utf8 = decoded.second;
-    GGML_ASSERT(!grammar.stacks.empty());
+    if (grammar.stacks.empty()) {
+        throw std::runtime_error("Unexpected empty grammar stack after accepting piece: " + piece);
+    }
 }