[ruby/prism] Fix a possible malloc(0)

https://github.com/ruby/prism/commit/fa108b8626

1 files changed, 1 insertions, 1 deletions

diff --git a/prism/prism.c b/prism/prism.c
index 9ab674de48..7e5d3e48b6 100644
--- a/prism/prism.c
+++ b/prism/prism.c
@@ -15069,7 +15069,7 @@ parse_expression_infix(pm_parser_t *parser, pm_node_t *node, pm_binding_power_t
                     }
                 }
 
-                if (!interpolated) {
+                if (!interpolated && total_length > 0) {
                     void *memory = malloc(total_length);
                     if (!memory) abort();