Mercurial > gnulib

diff lib/uniconv/u8-conv-from-enc.c @ 40212:8da9577294da

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unistr/*, uniconv/*: Fix undefined behaviour. Reported by Jeffrey Walton <noloader@gmail.com>. * lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size. * lib/unistr/u-cpy-alloc.h (FUNC): Likewise. * lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise. * lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author Bruno Haible <bruno@clisp.org>
date Sat, 09 Mar 2019 00:01:47 +0100
parents b06060465f09
children
line wrap: on
line diff
--- a/lib/uniconv/u8-conv-from-enc.c	Fri Mar 08 20:38:22 2019 +0100
+++ b/lib/uniconv/u8-conv-from-enc.c	Sat Mar 09 00:01:47 2019 +0100
@@ -77,7 +77,8 @@
             }
         }
 
-      memcpy ((char *) result, src, srclen);
+      if (srclen > 0)
+        memcpy ((char *) result, src, srclen);
       *lengthp = srclen;
       return result;
     }