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| author | Rémi Verschelde <rverschelde@gmail.com> | 2019-08-23 09:05:25 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-08-23 09:05:25 +0200 |
| commit | 3a53e792effa108f4566758671b9ffb67ec8fcda (patch) | |
| tree | df3ba229a7ba94d347e83b65b64ae4927008e761 | |
| parent | de6783eaca9c6d95f02b6998ac63eaa622bac19a (diff) | |
| parent | 538405f9c778a3f4b25c9f1a1a8c8bbe419c3336 (diff) | |
Merge pull request #31513 from qarmin/int_overflow
Prevent int overflow and underflow
| -rw-r--r-- | core/ustring.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/core/ustring.cpp b/core/ustring.cpp index 4e9ab7be6b..21696e2a55 100644 --- a/core/ustring.cpp +++ b/core/ustring.cpp @@ -40,6 +40,7 @@ #include "core/variant.h" #include <wchar.h> +#include <cstdint> #ifndef NO_USE_STDLIB #include <stdio.h> @@ -1668,6 +1669,7 @@ int String::hex_to_int(bool p_with_prefix) const { return 0; } + ERR_FAIL_COND_V_MSG(hex > INT32_MAX / 16, sign == 1 ? INT32_MAX : INT32_MIN, "Cannot represent " + *this + " as integer, provided value is " + (sign == 1 ? "too big." : "too small.")); hex *= 16; hex += n; s++; @@ -1709,6 +1711,7 @@ int64_t String::hex_to_int64(bool p_with_prefix) const { return 0; } + ERR_FAIL_COND_V_MSG(hex > INT64_MAX / 16, sign == 1 ? INT64_MAX : INT64_MIN, "Cannot represent " + *this + " as 64-bit integer, provided value is " + (sign == 1 ? "too big." : "too small.")); hex *= 16; hex += n; s++; @@ -1748,6 +1751,7 @@ int64_t String::bin_to_int64(bool p_with_prefix) const { return 0; } + ERR_FAIL_COND_V_MSG(binary > INT64_MAX / 2, sign == 1 ? INT64_MAX : INT64_MIN, "Cannot represent " + *this + " as 64-bit integer, provided value is " + (sign == 1 ? "too big." : "too small.")); binary *= 2; binary += n; s++; @@ -1771,6 +1775,7 @@ int String::to_int() const { CharType c = operator[](i); if (c >= '0' && c <= '9') { + ERR_FAIL_COND_V_MSG(integer > INT32_MAX / 10, sign == 1 ? INT32_MAX : INT32_MIN, "Cannot represent " + *this + " as integer, provided value is " + (sign == 1 ? "too big." : "too small.")); integer *= 10; integer += c - '0'; @@ -1798,6 +1803,7 @@ int64_t String::to_int64() const { CharType c = operator[](i); if (c >= '0' && c <= '9') { + ERR_FAIL_COND_V_MSG(integer > INT64_MAX / 10, sign == 1 ? INT64_MAX : INT64_MIN, "Cannot represent " + *this + " as 64-bit integer, provided value is " + (sign == 1 ? "too big." : "too small.")); integer *= 10; integer += c - '0'; @@ -1828,6 +1834,7 @@ int String::to_int(const char *p_str, int p_len) { char c = p_str[i]; if (c >= '0' && c <= '9') { + ERR_FAIL_COND_V_MSG(integer > INT32_MAX / 10, sign == 1 ? INT32_MAX : INT32_MIN, "Cannot represent " + String(p_str).substr(0, to) + " as integer, provided value is " + (sign == 1 ? "too big." : "too small.")); integer *= 10; integer += c - '0'; @@ -2140,6 +2147,14 @@ int64_t String::to_int(const CharType *p_str, int p_len) { if (c >= '0' && c <= '9') { + if (integer > INT32_MAX / 10) { + String number(""); + str = p_str; + while (str != limit) { + number += *(str++); + } + ERR_FAIL_V_MSG(sign == 1 ? INT32_MAX : INT32_MIN, "Cannot represent " + number + " as integer, provided value is " + (sign == 1 ? "too big." : "too small.")); + } integer *= 10; integer += c - '0'; } else { |