From 6655647bada19de910885d04aff9a083c3cea366 Mon Sep 17 00:00:00 2001
From: Bo Tang <botang@mit.edu>
Date: Tue, 30 Jun 2026 22:35:00 -0400
Subject: [PATCH] Fix: handle MPS file open failure

---
 src/mps_parser.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mps_parser.c b/src/mps_parser.c
index c37687e..27ac3f3 100644
--- a/src/mps_parser.c
+++ b/src/mps_parser.c
@@ -408,6 +408,7 @@ lp_problem_t *read_mps_file(const char *filename)
     if (!reader)
     {
         fprintf(stderr, "ERROR: Could not open file %s\n", filename);
+        return NULL;
     }
 
     namemap_init(&state.row_map, 1024);