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Message-ID: <CAJJ2OC3eGmk6pN0bEbhvRcHDTauEbB2VNj6qpK41uGj88YKNFQ@mail.gmail.com>
Date: Tue, 26 Jul 2016 15:25:40 -0700
From: Jacob Abrams <jacob@...ver.com>
To: musl@...ts.openwall.com
Subject: vprintf.c bug
I believe there is a small bug in vfprintf.c
I had to change the if statement from
ret = printf_core(f, fmt, &ap2, nl_arg, nl_type);
if (saved_buf) {
to
ret = printf_core(f, fmt, &ap2, nl_arg, nl_type);
if (f->buf == internal_buf) {
Because the saved_buf may be NULL which will result the internal
buffer being used but the file not being reset properly after the call
to printf_core. This was discovered while using MUSL v1.1.4 on an OS
other than Linux.
Please cc-me on any response.
Regards,
Jacob
jacob@...ver.com
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