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-rw-r--r--stdio-common/vfscanf.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c
index ef0dbee..f201c46 100644
--- a/stdio-common/vfscanf.c
+++ b/stdio-common/vfscanf.c
@@ -462,7 +462,35 @@ __vfscanf (FILE *s, const char *format, va_list argptr)
*ARG (short int *) = read_in;
else
*ARG (int *) = read_in;
+
+#ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1
+ /* We have a severe problem here. The ISO C standard
+ contradicts itself in explaining the effect of the %n
+ format in `scanf'. While in ISO C:1990 and the ISO C
+ Amendement 1:1995 the result is described as
+
+ Execution of a %n directive does not effect the
+ assignment count returned at the completion of
+ execution of the f(w)scanf function.
+
+ in ISO C Corrigendum 1:1994 the following was added:
+
+ Subclause 7.9.6.2
+ Add the following fourth example:
+ In:
+ #include <stdio.h>
+ int d1, d2, n1, n2, i;
+ i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2);
+ the value 123 is assigned to d1 and the value3 to n1.
+ Because %n can never get an input failure the value
+ of 3 is also assigned to n2. The value of d2 is not
+ affected. The value 3 is assigned to i.
+
+ We go for now with the historically correct code fro ISO C,
+ i.e., we don't count the %n assignments. When it ever
+ should proof to be wrong just remove the #ifdef above. */
++done;
+#endif
}
break;