Do not crash when it has nothing to say. (#796)

l29ah · web-flow · commit cc9cee8e9e75 · 2023-04-06T17:59:11.000+02:00
Otherwise observing this in the interactive mode:
/usr/lib/gcc/x86_64-pc-linux-gnu/12/include/g++-v12/bits/stl_vector.h:1230: reference std::vector&lt;int&gt;::back() [_Tp = int, _Alloc = std::allocator&lt;int&gt;]: Assertion '!this-&gt;empty()' failed.
diff --git a/examples/main/main.cpp b/examples/main/main.cpp
@@ -431,7 +431,7 @@ int main(int argc, char ** argv) {
         }
 
         // end of text token
-        if (embd.back() == llama_token_eos()) {
+        if (!embd.empty() && embd.back() == llama_token_eos()) {
             if (params.instruct) {
                 is_interacting = true;
             } else {

Original file line number	Diff line number	Diff line change
`@@ -431,7 +431,7 @@ int main(int argc, char ** argv) {`
`431`	`431`	`}`
`432`	`432`
`433`	`433`	`// end of text token`
`434`		`- if (embd.back() == llama_token_eos()) {`
	`434`	`+ if (!embd.empty() && embd.back() == llama_token_eos()) {`
`435`	`435`	`if (params.instruct) {`
`436`	`436`	`is_interacting = true;`
`437`	`437`	`} else {`