From f73f0301fd2d4306f173984fc8089ad463da26fe Mon Sep 17 00:00:00 2001
From: lemon <lsof@mailbox.org>
Date: Tue, 24 Feb 2026 14:09:19 +0100
Subject: diagnostics: also print #include provenance for warnings

---
 io.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'io.c')

diff --git a/io.c b/io.c
index e10c798..9da7b7c 100644
--- a/io.c
+++ b/io.c
@@ -1111,7 +1111,7 @@ fatal(const struct span *span, const char *fmt, ...)
    exit(1);
 }
 
-int nerror;
+int nerror, nwarn;
 enum { MAXERROR = 20 };
 
 void
@@ -1136,9 +1136,14 @@ warn(const struct span *span, const char *fmt, ...)
 
    if (ccopt.wnone) return;
    if (ccopt.werror) ++nerror;
+   else ++nwarn;
    va_start(ap, fmt);
    vdiag(span, ccopt.werror ? DGERROR : DGWARN, fmt, ap);
    va_end(ap);
+   if (nerror > MAXERROR) {
+      efmt("Too many errors emitted, stopping now.\n");
+      exit(1);
+   }
 }
 
 void
-- 
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