From 375e9f050de6b09c00eecafd63bd9b967fbeb335 Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Wed, 26 Nov 2025 18:46:44 +0100
Subject: c/type: make implicit const T* -> T* conversion warning, not error

---
 io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index b3119fc..58ebf17 100644
--- a/io.c
+++ b/io.c
@@ -1011,10 +1011,11 @@ vdiag(const struct span *span, enum diagkind kind, const char *fmt, va_list ap)
          do {
             ioputc(&bstderr, mark);
             mark = '~';
-         } while (--nmark && ++j < end);
+         } while (--nmark > 0 && ++j < end);
          col = 1;
          ++line;
          efmt("%g.\n");
+         --nmark;
       }
       ioputc(&bstderr,  '\n');
    }
-- 
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