diff options
Diffstat (limited to 'stdio-common/vfscanf.c')
| -rw-r--r-- | stdio-common/vfscanf.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c index 2e8cf9f5f5..1dbfc53ec9 100644 --- a/stdio-common/vfscanf.c +++ b/stdio-common/vfscanf.c @@ -36,6 +36,13 @@ # define LONGLONG long #endif +/* Determine whether we have to handle `long long' at all. */ +#if LONG_MAX == LONG_LONG_MAX +# define need_longlong 0 +#else +# define need_longlong 1 +#endif + /* Those are flags in the conversion format. */ # define LONG 0x001 /* l: long or double */ # define LONGDBL 0x002 /* L: long long or long double */ @@ -439,7 +446,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { /* A double `l' is equivalent to an `L'. */ ++f; - flags |= LONGDBL; + flags |= need_longlong ? LONGDBL | LONG; } else /* ints are long ints. */ @@ -448,7 +455,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) case 'q': case 'L': /* doubles are long doubles, and ints are long long ints. */ - flags |= LONGDBL; + flags |= need_longlong ? LONGDBL | LONG; break; case 'a': /* The `a' is used as a flag only if followed by `s', `S' or @@ -463,19 +470,19 @@ __vfscanf (FILE *s, const char *format, va_list argptr) flags |= MALLOC; break; case 'z': - if (sizeof (size_t) > sizeof (unsigned long int)) + if (need_longlong && sizeof (size_t) > sizeof (unsigned long int)) flags |= LONGDBL; else if (sizeof (size_t) > sizeof (unsigned int)) flags |= LONG; break; case 'j': - if (sizeof (uintmax_t) > sizeof (unsigned long int)) + if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int)) flags |= LONGDBL; else if (sizeof (uintmax_t) > sizeof (unsigned int)) flags |= LONG; break; case 't': - if (sizeof (ptrdiff_t) > sizeof (long int)) + if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) flags |= LONGDBL; else if (sizeof (ptrdiff_t) > sizeof (int)) flags |= LONG; @@ -525,7 +532,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (!(flags & SUPPRESS)) { /* Don't count the read-ahead. */ - if (flags & LONGDBL) + if (need_longlong && (flags & LONGDBL)) *ARG (long long int *) = read_in; else if (flags & LONG) *ARG (long int *) = read_in; @@ -916,7 +923,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Convert the number. */ ADDW ('\0'); - if (flags & LONGDBL) + if (need_longlong && (flags & LONGDBL)) { if (number_signed) num.q = __strtoll_internal (wp, &tw, base, flags & GROUP); @@ -937,7 +944,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { if (! number_signed) { - if (flags & LONGDBL) + if (need_longlong && (flags & LONGDBL)) *ARG (unsigned LONGLONG int *) = num.uq; else if (flags & LONG) *ARG (unsigned long int *) = num.ul; @@ -951,7 +958,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } else { - if (flags & LONGDBL) + if (need_longlong && (flags & LONGDBL)) *ARG (LONGLONG int *) = num.q; else if (flags & LONG) *ARG (long int *) = num.l; |