From: Keith Packard <keithp@keithp.com>
Date: Fri, 18 Jun 2021 18:09:48 +0000 (-0700)
Subject: stdio: Parse 0x0p+00 correctly in scanf
X-Git-Tag: cygwin-3_3_0-release~159
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=92068f4cc5f2cb655b32a46fdba93a9e572c307b;p=newlib-cygwin.git

stdio: Parse 0x0p+00 correctly in scanf

The scanf code was skipping the '0' after the 'x' causing the
resulting buffer to contain an invalid number when passed to strtod.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/newlib/libc/stdio/vfscanf.c b/newlib/libc/stdio/vfscanf.c
index 1d5e6512a..037692531 100644
--- a/newlib/libc/stdio/vfscanf.c
+++ b/newlib/libc/stdio/vfscanf.c
@@ -1628,6 +1628,7 @@ __SVFSCANF_R (struct _reent *rptr,
 		      && zeroes == 1)
 		    {
 		      flags |= HEXFLT;
+                      flags &= ~NDIGITS;
 		      /* We skipped the first zero, so we have to add
 			 it now to the buffer. */
 		      *p++ = '0';