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stdlib: fix grouping verification with multi-byte thousands separator (bug 30964)
The grouping verification only worked for a single-byte thousands separator. With a multi-byte separator it returned as if no separators were present. The actual parsing in str_to_mpn will then go wrong when there are multiple adjacent multi-byte separators in the number.
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@ -59,7 +59,6 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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size_t thousands_len = 1;
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#else
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size_t thousands_len = strlen (thousands);
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int cnt;
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#endif
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while (end - begin >= thousands_len)
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@ -74,14 +73,8 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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if (*cp == thousands)
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break;
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#else
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if (cp[thousands_len - 1] == *thousands)
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{
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for (cnt = 1; thousands[cnt] != '\0'; ++cnt)
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if (thousands[cnt] != cp[thousands_len - 1 - cnt])
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break;
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if (thousands[cnt] == '\0')
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break;
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}
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if (memcmp (cp, thousands, thousands_len) == 0)
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break;
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#endif
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--cp;
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}
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@ -91,7 +84,7 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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if (cp < begin)
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return end;
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if (end - cp == (int) *gp + 1)
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if (end - cp == (int) *gp + thousands_len)
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{
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/* This group matches the specification. */
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@ -105,7 +98,7 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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remainder of the string from BEGIN to NEW_END is the part we
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will consider if there is a grouping error in this trailing
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portion from CP to END. */
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new_end = cp - 1;
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new_end = cp;
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/* Loop while the grouping is correct. */
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while (1)
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@ -132,10 +125,7 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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if (*cp == thousands)
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break;
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#else
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for (cnt = 0; thousands[cnt] != '\0'; ++cnt)
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if (thousands[cnt] != cp[thousands_len - cnt - 1])
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break;
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if (thousands[cnt] == '\0')
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if (memcmp (cp, thousands, thousands_len) == 0)
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break;
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#endif
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--cp;
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@ -156,20 +146,17 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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if (*cp == thousands)
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break;
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#else
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for (cnt = 0; thousands[cnt] != '\0'; ++cnt)
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if (thousands[cnt] != cp[thousands_len - cnt - 1])
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break;
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if (thousands[cnt] == '\0')
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if (memcmp (cp, thousands, thousands_len) == 0)
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break;
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#endif
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--cp;
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}
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if (cp < begin && group_end - cp <= (int) *gp)
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if (cp < begin && group_end - cp <= (int) *gp + thousands_len - 1)
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/* Final group is correct. */
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return end;
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if (cp < begin || group_end - cp != (int) *gp)
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if (cp < begin || group_end - cp != (int) *gp + thousands_len - 1)
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/* Incorrect group. Punt. */
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break;
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}
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@ -183,8 +170,8 @@ __correctly_grouped_prefixmb (const STRING_TYPE *begin, const STRING_TYPE *end,
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else
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{
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/* Even the first group was wrong; determine maximum shift. */
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if (end - cp > (int) *gp + 1)
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end = cp + (int) *gp + 1;
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if (end - cp > (int) *gp + thousands_len)
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end = cp + (int) *gp + thousands_len;
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else if (cp < begin)
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/* This number does not fill the first group, but is correct. */
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return end;
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@ -13,7 +13,9 @@ static const struct
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} tests[] =
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{
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{ "000"NNBSP"000"NNBSP"000", "", 0.0 },
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{ "1"NNBSP"000"NNBSP"000,5x", "x", 1000000.5 }
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{ "1"NNBSP"000"NNBSP"000,5x", "x", 1000000.5 },
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/* Bug 30964 */
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{ "10"NNBSP NNBSP"200", NNBSP NNBSP"200", 10.0 }
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};
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#define NTESTS (sizeof (tests) / sizeof (tests[0]))
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