diff options
Diffstat (limited to 'stdio-common/vfscanf-internal.c')
| -rw-r--r-- | stdio-common/vfscanf-internal.c | 51 |
1 files changed, 34 insertions, 17 deletions
diff --git a/stdio-common/vfscanf-internal.c b/stdio-common/vfscanf-internal.c index bfb9baa..9b1197d 100644 --- a/stdio-common/vfscanf-internal.c +++ b/stdio-common/vfscanf-internal.c @@ -1455,13 +1455,14 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, int from_level; int to_level; int level; + enum { num_digits_len = 10 }; #ifdef COMPILE_WSCANF - const wchar_t *wcdigits[10]; - const wchar_t *wcdigits_extended[10]; + const wchar_t *wcdigits[num_digits_len]; #else - const char *mbdigits[10]; - const char *mbdigits_extended[10]; + const char *mbdigits[num_digits_len]; #endif + CHAR_T *digits_extended[num_digits_len] = { NULL }; + /* "to_inpunct" is a map from ASCII digits to their equivalent in locale. This is defined for locales which use an extra digits set. */ @@ -1482,18 +1483,23 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, /* Adding new level for extra digits set in locale file. */ ++to_level; - for (n = 0; n < 10; ++n) + for (n = 0; n < num_digits_len; ++n) { #ifdef COMPILE_WSCANF wcdigits[n] = (const wchar_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); wchar_t *wc_extended = (wchar_t *) - alloca ((to_level + 2) * sizeof (wchar_t)); + malloc ((to_level + 2) * sizeof (wchar_t)); + if (wc_extended == NULL) + { + done = EOF; + goto digits_extended_fail; + } __wmemcpy (wc_extended, wcdigits[n], to_level); wc_extended[to_level] = __towctrans (L'0' + n, map); wc_extended[to_level + 1] = '\0'; - wcdigits_extended[n] = wc_extended; + digits_extended[n] = wc_extended; #else mbdigits[n] = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; @@ -1524,14 +1530,18 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, size_t mbdigits_len = last_char - mbdigits[n]; /* Allocate memory for extended multibyte digit. */ - char *mb_extended; - mb_extended = (char *) alloca (mbdigits_len + mblen + 1); + char *mb_extended = malloc (mbdigits_len + mblen + 1); + if (mb_extended == NULL) + { + done = EOF; + goto digits_extended_fail; + } /* And get the mbdigits + extra_digit string. */ *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n], mbdigits_len), extra_mbdigit, mblen) = '\0'; - mbdigits_extended[n] = mb_extended; + digits_extended[n] = mb_extended; #endif } } @@ -1541,7 +1551,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, { /* In this round we get the pointer to the digit strings and also perform the first round of comparisons. */ - for (n = 0; n < 10; ++n) + for (n = 0; n < num_digits_len; ++n) { /* Get the string for the digits with value N. */ #ifdef COMPILE_WSCANF @@ -1553,7 +1563,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, DIAG_IGNORE_NEEDS_COMMENT (4.7, "-Wmaybe-uninitialized"); if (__glibc_unlikely (map != NULL)) - wcdigits[n] = wcdigits_extended[n]; + wcdigits[n] = digits_extended[n]; else wcdigits[n] = (const wchar_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); @@ -1574,7 +1584,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, int avail = width > 0 ? width : INT_MAX; if (__glibc_unlikely (map != NULL)) - mbdigits[n] = mbdigits_extended[n]; + mbdigits[n] = digits_extended[n]; else mbdigits[n] = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; @@ -1617,13 +1627,13 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, #endif } - if (n == 10) + if (n == num_digits_len) { /* Have not yet found the digit. */ for (level = from_level + 1; level <= to_level; ++level) { /* Search all ten digits of this level. */ - for (n = 0; n < 10; ++n) + for (n = 0; n < num_digits_len; ++n) { #ifdef COMPILE_WSCANF if (c == (wint_t) *wcdigits[n]) @@ -1679,7 +1689,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, } } - if (n < 10) + if (n < num_digits_len) c = L_('0') + n; else if (flags & GROUP) { @@ -1708,7 +1718,7 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, { __set_errno (ENOMEM); done = EOF; - goto errout; + break; } if (*cmpp != '\0') @@ -1742,6 +1752,13 @@ __vfscanf_internal (FILE *s, const char *format, va_list argptr, c = inchar (); } + +digits_extended_fail: + for (n = 0; n < num_digits_len; n++) + free (digits_extended[n]); + + if (done == EOF) + goto errout; } else /* Read the number into workspace. */ |