Author: pfg
Date: Thu Nov 28 16:36:03 2013
New Revision: 258712
URL: http://svnweb.freebsd.org/changeset/base/258712
Log:
libcpp: fix an underflow.
Obtained from: OpenBSD (Rev 1.2)
MFC after: 2 weeks
Modified:
head/contrib/gcclibs/libcpp/charset.c
Modified: head/contrib/gcclibs/libcpp/charset.c
==============================================================================
--- head/contrib/gcclibs/libcpp/charset.c Thu Nov 28 15:28:51 2013
(r258711)
+++ head/contrib/gcclibs/libcpp/charset.c Thu Nov 28 16:36:03 2013
(r258712)
@@ -1628,7 +1628,7 @@ _cpp_convert_input (cpp_reader *pfile, c
terminate with another \r, not an \n, so that we do not mistake
the \r\n sequence for a single DOS line ending and erroneously
issue the "No newline at end of file" diagnostic. */
- if (to.text[to.len - 1] == '\r')
+ if (to.len > 0 && to.text[to.len - 1] == '\r')
to.text[to.len] = '\r';
else
to.text[to.len] = '\n';
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