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authorUlrich Drepper <drepper@redhat.com>1998-09-18 18:51:34 +0000
committerUlrich Drepper <drepper@redhat.com>1998-09-18 18:51:34 +0000
commitc53a89d434f518f99d5168e9c8693ac63777042a (patch)
tree65f013cb4974e2ed4fb7144ff474a320fa95aac5 /stdio-common
parent00bc5db059212a20afb42da40b38d7f145a46dfd (diff)
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Update.
* stdio-common/vfscanf.c: Fix reading (nil) for %p.
Diffstat (limited to 'stdio-common')
-rw-r--r--stdio-common/vfscanf.c35
1 files changed, 30 insertions, 5 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c
index f9bbb69..ec4a264 100644
--- a/stdio-common/vfscanf.c
+++ b/stdio-common/vfscanf.c
@@ -216,6 +216,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr)
possibly be matched even if in the input stream no character is
available anymore. */
int skip_space = 0;
+ /* Nonzero if we are reading a pointer. */
+ int read_pointer;
/* Workspace. */
char *tw; /* Temporary pointer. */
char *wp = NULL; /* Workspace. */
@@ -354,6 +356,9 @@ __vfscanf (FILE *s, const char *format, va_list argptr)
/* This is the start of the conversion string. */
flags = 0;
+ /* Not yet decided whether we read a pointer or not. */
+ read_pointer = 0;
+
/* Initialize state of modifiers. */
argpos = 0;
@@ -871,13 +876,32 @@ __vfscanf (FILE *s, const char *format, va_list argptr)
c = inchar ();
}
- /* The just read character is not part of the number anymore. */
- ungetc (c, s);
-
if (wpsize == 0 ||
(wpsize == 1 && (wp[0] == '+' || wp[0] == '-')))
- /* There was no number. */
- conv_error ();
+ {
+ /* There was no number. If we are supposed to read a pointer
+ we must recognize "(nil)" as well. */
+ if (wpsize == 0 && read_pointer && (width < 0 || width >= 0)
+ && c == '('
+ && tolower (inchar ()) == 'n'
+ && tolower (inchar ()) == 'i'
+ && tolower (inchar ()) == 'l'
+ && inchar () == ')')
+ /* We must produce the value of a NULL pointer. A single
+ '0' digit is enough. */
+ ADDW ('0');
+ else
+ {
+ /* The last read character is not part of the number
+ anymore. */
+ ungetc (c, s);
+
+ conv_error ();
+ }
+ }
+ else
+ /* The just read character is not part of the number anymore. */
+ ungetc (c, s);
/* Convert the number. */
ADDW ('\0');
@@ -1221,6 +1245,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr)
flags &= ~(SHORT|LONGDBL);
flags |= LONG;
number_signed = 0;
+ read_pointer = 1;
goto number;
}
}