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util: Restore GetIntArg saturating behavior

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The new locale-independent atoi64 method introduced in #20452 parses
large integer values higher than maximum representable value as 0
instead of the maximum value, which breaks backwards compatibility.
This commit restores compatibility and adds test coverage for this case
in terms of the related GetIntArg and strtoll functions.

Co-authored-by: Ryan Ofsky <ryan@ofsky.org>
This commit is contained in:
James O'Beirne
2021-12-22 12:11:13 -05:00
committed by Ryan Ofsky
parent c561f2f06e
commit b5c9bb5cb9
5 changed files with 66 additions and 25 deletions
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55
src/test/util_tests.cpp
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@@ -24,6 +24,8 @@
#include <array>
#include <optional>
#include <limits>
#include <map>
#include <stdint.h>
#include <string.h>
#include <thread>
@@ -1621,6 +1623,11 @@ BOOST_AUTO_TEST_CASE(test_ToIntegral)
BOOST_CHECK(!ToIntegral<uint8_t>("256"));
}
int64_t atoi64_legacy(const std::string& str)
{
return strtoll(str.c_str(), nullptr, 10);
}
BOOST_AUTO_TEST_CASE(test_LocaleIndependentAtoi)
{
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("1234"), 1'234);
@@ -1648,48 +1655,68 @@ BOOST_AUTO_TEST_CASE(test_LocaleIndependentAtoi)
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>(""), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("aap"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("0x1"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("-32482348723847471234"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("32482348723847471234"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("-32482348723847471234"), -2'147'483'647 - 1);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("32482348723847471234"), 2'147'483'647);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("-9223372036854775809"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("-9223372036854775809"), -9'223'372'036'854'775'807LL - 1LL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("-9223372036854775808"), -9'223'372'036'854'775'807LL - 1LL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("9223372036854775807"), 9'223'372'036'854'775'807);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("9223372036854775808"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>("9223372036854775808"), 9'223'372'036'854'775'807);
std::map<std::string, int64_t> atoi64_test_pairs = {
{"-9223372036854775809", std::numeric_limits<int64_t>::min()},
{"-9223372036854775808", -9'223'372'036'854'775'807LL - 1LL},
{"9223372036854775807", 9'223'372'036'854'775'807},
{"9223372036854775808", std::numeric_limits<int64_t>::max()},
{"+-", 0},
{"0x1", 0},
{"ox1", 0},
{"", 0},
};
for (const auto& pair : atoi64_test_pairs) {
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>(pair.first), pair.second);
}
// Ensure legacy compatibility with previous versions of Bitcoin Core's atoi64
for (const auto& pair : atoi64_test_pairs) {
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int64_t>(pair.first), atoi64_legacy(pair.first));
}
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint64_t>("-1"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint64_t>("0"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint64_t>("18446744073709551615"), 18'446'744'073'709'551'615ULL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint64_t>("18446744073709551616"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint64_t>("18446744073709551616"), 18'446'744'073'709'551'615ULL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("-2147483649"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("-2147483649"), -2'147'483'648LL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("-2147483648"), -2'147'483'648LL);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("2147483647"), 2'147'483'647);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("2147483648"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int32_t>("2147483648"), 2'147'483'647);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint32_t>("-1"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint32_t>("0"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint32_t>("4294967295"), 4'294'967'295U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint32_t>("4294967296"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint32_t>("4294967296"), 4'294'967'295U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("-32769"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("-32769"), -32'768);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("-32768"), -32'768);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("32767"), 32'767);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("32768"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int16_t>("32768"), 32'767);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint16_t>("-1"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint16_t>("0"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint16_t>("65535"), 65'535U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint16_t>("65536"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint16_t>("65536"), 65'535U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("-129"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("-129"), -128);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("-128"), -128);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("127"), 127);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("128"), 0);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<int8_t>("128"), 127);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint8_t>("-1"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint8_t>("0"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint8_t>("255"), 255U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint8_t>("256"), 0U);
BOOST_CHECK_EQUAL(LocaleIndependentAtoi<uint8_t>("256"), 255U);
}
BOOST_AUTO_TEST_CASE(test_ParseInt64)