diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 4f2800101..ee43302f0 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,8 @@
+2003-07-29  Honda Hiroki  <hhonda@ipflex.com>
+
+	* libc/stdio/vfprintf.c: Set output size to 1 when
+	we have %f format with precision 0 and # flag not specified.
+
 2003-07-29  Alexandre Oliva  <aoliva@redhat.com>
 
 	* libc/machine/mn10300/setjmp.S: Never emit both .am33 and
diff --git a/newlib/libc/stdio/vfprintf.c b/newlib/libc/stdio/vfprintf.c
index 82255735e..c10103d23 100644
--- a/newlib/libc/stdio/vfprintf.c
+++ b/newlib/libc/stdio/vfprintf.c
@@ -830,7 +830,9 @@ reswitch:	switch (ch) {
 					if (prec || flags & ALT)
 						size += prec + 1;
 				} else	/* "0.X" */
-					size = prec + 2;
+					size = (prec || flags & ALT)
+						  ? prec + 2
+						  : 1;
 			} else if (expt >= ndig) {	/* fixed g fmt */
 				size = expt;
 				if (flags & ALT)