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[Bug libstdc++/81395] basic_filebuf::overflow recurses and overflows stack
- From: "redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 11 Jul 2017 15:15:01 +0000
- Subject: [Bug libstdc++/81395] basic_filebuf::overflow recurses and overflows stack
- Auto-submitted: auto-generated
- References: <bug-81395-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81395
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'm testing this patch:
--- a/libstdc++-v3/include/bits/fstream.tcc
+++ b/libstdc++-v3/include/bits/fstream.tcc
@@ -699,7 +699,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
if (__n == 0)
{
- _M_set_buffer(0);
+ _M_set_buffer(-1);
_M_reading = true;
}
else if (__len == 0)