diff options
Diffstat (limited to 'stdio-common/vfscanf-internal.c')
| -rw-r--r-- | stdio-common/vfscanf-internal.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/stdio-common/vfscanf-internal.c b/stdio-common/vfscanf-internal.c index 9b1197d751..cacb9668ba 100644 --- a/stdio-common/vfscanf-internal.c +++ b/stdio-common/vfscanf-internal.c @@ -381,6 +381,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, while (*f != '\0') { unsigned int argpos; + bool is_fast; /* Extract the next argument, which is of type TYPE. For a %N$... spec, this is the Nth argument from the beginning; otherwise it is the next argument after the state now in ARG. */ @@ -602,6 +603,53 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, else if (sizeof (ptrdiff_t) > sizeof (int)) flags |= LONG; break; + case L_('w'): + { + is_fast = false; + if (*f == L_('f')) + { + ++f; + is_fast = true; + } + int bitwidth = 0; + if (ISDIGIT (*f)) + bitwidth = read_int (&f); + if (is_fast) + switch (bitwidth) + { + case 8: + bitwidth = INT_FAST8_WIDTH; + break; + case 16: + bitwidth = INT_FAST16_WIDTH; + break; + case 32: + bitwidth = INT_FAST32_WIDTH; + break; + case 64: + bitwidth = INT_FAST64_WIDTH; + break; + } + switch (bitwidth) + { + case 8: + flags |= CHAR; + break; + case 16: + flags |= SHORT; + break; + case 32: + break; + case 64: + flags |= LONGDBL | LONG; + break; + default: + /* ISO C requires this error to be detected. */ + __set_errno (EINVAL); + goto errout; + } + } + break; default: /* Not a recognized modifier. Backup. */ --f; |