better error message on failure to open JSON file

2018-11-11 12:50:14 -07:00 · 2018-11-11 12:50:14 -07:00 · cdd0f0fea0
parent 15d9b3d3cc
commit cdd0f0fea0
1 changed files with 4 additions and 0 deletions
--- a/json/jsonparse.cc
+++ b/json/jsonparse.cc
@ -749,6 +749,10 @@ bool parse_json_file(std::istream &f, std::string &filename, Context *ctx)
 {
    try {
        using namespace JsonParser;
+
+        if (!f)
+            log_error("failed to open JSON file.\n");
+
        int lineno = 1;

        JsonNode root(f, lineno);