From 53d8a6707e3cf635004927a920c8b7fa967ea966 Mon Sep 17 00:00:00 2001
From: Rob Landley <rob@landley.net>
Date: Fri, 15 Dec 2023 04:44:53 -0600
Subject: [PATCH] Exit with (eventual) error if any characters failed to
 convert without -c.

---
 toys/posix/iconv.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/toys/posix/iconv.c b/toys/posix/iconv.c
index 0674f3db..1d8f40b1 100644
--- a/toys/posix/iconv.c
+++ b/toys/posix/iconv.c
@@ -51,8 +51,11 @@ static void do_iconv(int fd, char *name)
     iconv(TT.ic, &in, &inlen, &out, &outlen);
     if (in == toybuf) {
       // Skip first byte of illegal sequence to avoid endless loops
-      if (toys.optflags & FLAG_c) in++;
-      else *(out++) = *(in++);
+      if (FLAG(c)) in++;
+      else {
+        *(out++) = *(in++);
+        toys.exitval = 1;
+      }
       inlen--;
     }
     if (out != outstart) xwrite(1, outstart, out-outstart);
-- 
2.39.2