From e7629990be8790a2d28e3a59dec71d05bb53b195 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Wed, 16 Sep 2020 21:32:08 -0700
Subject: Check files can be opened

---
 bpeg.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'bpeg.c')

diff --git a/bpeg.c b/bpeg.c
index e2e5286..8575ee3 100644
--- a/bpeg.c
+++ b/bpeg.c
@@ -52,6 +52,7 @@ static char *getflag(const char *flag, char *argv[], int *i)
 static int run_match(grammar_t *g, const char *filename, vm_op_t *pattern, unsigned int flags)
 {
     file_t *f = load_file(filename);
+    check(f, "Could not open file: %s", filename);
     match_t *m = match(g, f, f->contents, pattern, flags);
     if (m != NULL && m->end > m->start + 1) {
         print_match(f, m);
-- 
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