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author | Nikita Popov <nikita.ppv@gmail.com> | 2019-03-14 17:25:44 +0100 |
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committer | Nikita Popov <nikita.ppv@gmail.com> | 2019-03-14 17:25:54 +0100 |
commit | 217c05da527bcbc8230b96e236ae687447409936 (patch) | |
tree | e8b0406ec398054049eb5dab4c0f91e70ddc4704 /ext/bcmath/libbcmath | |
parent | 82174e68b6065e8593c2cf8da86841b36037d166 (diff) | |
parent | e7d40afb7a7984174eb132a14b7a6621c8e76258 (diff) | |
download | php-git-217c05da527bcbc8230b96e236ae687447409936.tar.gz |
Merge branch 'PHP-7.2' into PHP-7.3
Diffstat (limited to 'ext/bcmath/libbcmath')
-rw-r--r-- | ext/bcmath/libbcmath/src/num2long.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/ext/bcmath/libbcmath/src/num2long.c b/ext/bcmath/libbcmath/src/num2long.c index 81e82a6fac..228f6645a2 100644 --- a/ext/bcmath/libbcmath/src/num2long.c +++ b/ext/bcmath/libbcmath/src/num2long.c @@ -54,12 +54,19 @@ bc_num2long (num) /* Extract the int value, ignore the fraction. */ val = 0; nptr = num->n_value; - for (index=num->n_len; (index>0) && (val<=(LONG_MAX/BASE)); index--) - val = val*BASE + *nptr++; + for (index = num->n_len; index > 0; index--) { + char n = *nptr++; - /* Check for overflow. If overflow, return zero. */ - if (index>0) val = 0; - if (val < 0) val = 0; + if (val > LONG_MAX/BASE) { + return 0; + } + val *= BASE; + + if (val > LONG_MAX - n) { + return 0; + } + val += n; + } /* Return the value. */ if (num->n_sign == PLUS) |