107093 2013-01-16 22:01:45 -0800 UMBRELLA: WTF should build with -Wshorten-64-to-32 2016-03-09 09:31:16 -0800 1 1 1 Unclassified WebKit Web Template Framework 528+ (Nightly build) Unspecified Unspecified NEW InRadar P2 Normal --- 107503 107126 107227 113170 114958 114970 115047 109834 109846 1 ddkilzer ddkilzer benjamin buildbot cmarcelo darin dbates ojan.autocc oliver rniwa sam webkit-bug-importer webkit-ews webkit.review.bot oldest_to_newest 809068 0 183118 ddkilzer 2013-01-16 22:01:45 -0800 Created attachment 183118 Patch <http://webkit.org/b/000000> <rdar://problem/12551754> Reviewed by NOBODY (OOPS!). Source/JavaScriptCore: * runtime/JSDateMath.cpp: (JSC::parseDateFromNullTerminatedCharacters): Change 'offset' from int to long to match change to function in WTF. Also remove now unneeded static_cast<int>(). Source/WTF: * Configurations/Base.xcconfig: - Enable -Wshorten-64-to-32 by setting GCC_WARN_64_TO_32_BIT_CONVERSION to YES. * wtf/Assertions.cpp: (vprintf_stderr_common): - Use CFIndex type instead of int for the return value of CFStringGetMaximumSizeForEncoding(). * wtf/CryptographicallyRandomNumber.cpp: (ARC4RandomNumberGenerator::stir): - Use static_cast<int>() since the value is being used to generate a hash. * wtf/DateMath.cpp: (WTF::isLeapYear): (WTF::ymdhmsToSeconds): (WTF::parseDateFromNullTerminatedCharacters): (WTF::parseDateFromNullTerminatedCharacters): * wtf/DateMath.h: (WTF::parseDateFromNullTerminatedCharacters): (WTF::isLeapYear): - Change types from int to long since most local variables for 'year', 'month', 'day', 'hour' and 'minute' are already type long. - Also changed 'offset' variable from int to long, which made it possible to remove a static_cast<int>(). * wtf/DecimalNumber.cpp: (WTF::DecimalNumber::toStringDecimal): (WTF::DecimalNumber::toStringExponential): - Add overflow checks and static_cast<unsigned>() as needed. * wtf/FastMalloc.cpp: (fastMallocStatistics): Change length from int to size_t. (PageMapFreeObjectFinder::visit): Add ASSERT and static_cast<int>(). (PageMapMemoryUsageRecorder::recordPendingRegions): Add ASSERT and static_cast<unsigned>(). (PageMapMemoryUsageRecorder::visit): Add ASSERT and static_cast<int>() three times. (AdminRegionRecorder::recordPendingRegions): Add ASSERT and static_cast<unsigned>(). - NOTE: These ASSERT macros won't be compiled by default on Debug builds because FastMalloc is disabled in favor of system malloc. * wtf/GregorianDateTime.cpp: (WTF::GregorianDateTime::setToCurrentLocalTime): - Add static_cast<int>() to convert tm.tm_gmtoff. * wtf/MD5.cpp: (WTF::MD5::addBytes): - Add overflow check with CRASH() for 'length'. Replace 'length' with local variable, 'len', that is static_cast to unsigned. * wtf/dtoa.cpp: (WTF::multadd): Change int to size_t since these variables are only used for iterating. (WTF::mult): Add static_cast<int>() to BigInt::size() results. (WTF::lshift): Ditto. (WTF::cmp): Ditto. (WTF::diff): Ditto. (WTF::d2b): Ditto. (WTF::dtoa): Add ASSERT. Add static_cast<int32_t>(). (WTF::dtoa): Add overflow check with CRASH() and static_cast<int>(). * wtf/text/ASCIIFastPath.h: (WTF::copyLCharsFromUCharSource): Change local variables from unsigned to size_t. * wtf/text/AtomicString.h: (WTF::AtomicString::find): Change 'start' arguments from size_t to unsigned. (WTF::operator==): Add overflow check with CRASH() and static_cast<unsigned>(). * wtf/text/Base64.cpp: (WTF::base64Encode): Add overflow check with CRASH() and static_cast<unsigned>(). (WTF::base64Decode): Extract in.size() into local variable. Change UINT_MAX to std::numeric_limits<unsigned>::max(). Add static_cast<unsigned>(). * wtf/text/Base64.h: (WTF::base64Encode): Add overflow check with CRASH() and static_cast<unsigned>() to all four variants. * wtf/text/StringBuilder.h: (WTF::StringBuilder::append): Add overflow check with CRASH() and static_cast<unsigned>(). * wtf/text/StringConcatenate.h: (StringTypeAdapter<>): Add overflow check with CRASH() and static_cast<unsigned>() when setting m_length. One variant already had an overflow check. * wtf/text/StringImpl.cpp: (WTF::StringImpl::createFromLiteral): Add overflow check with CRASH() and static_cast<unsigned>(). (WTF::StringImpl::create): Add static_cast<unsigned>() since the overflow check already exists. (WTF::StringImpl::getData16SlowCase): Change local 'offset' variable from unsigned to size_t. (WTF::StringImpl::removeCharacters): Add static_cast<unsigned>() since we're removing characters and assume the current object has already been bounds-checked. (WTF::StringImpl::find): Add static_cast<unsigned>() since an overflow check already exists. (WTF::StringImpl::findIgnoringCase): Ditto. (WTF::StringImpl::replace): Ditto. * wtf/text/StringImpl.h: (WTF::StringImpl::StringImpl): Add static_cast<unsigned>() since the value is being used to compute a hash. * wtf/text/WTFString.cpp: (WTF::String::String): Add static_cast<unsigned>() since the overflow check already exists. (WTF::String::split): Add static_cast<unsigned>() since the current object has already been bounds-checked. (WTF::String::make8BitFrom16BitSource): Add overflow check with CRASH() and static_cast<unsigned>(). (WTF::String::make16BitFrom8BitSource): Ditto. (WTF::String::fromUTF8): Add static_cast<unsigned>() since the overflow check already exists. Change 'utf16Length' from unsigned to size_t. Static cast for 'utf16Length' is checked by ASSERT. (WTF::String::fromUTF8WithLatin1Fallback): Add overflow check with CRASH() and static_cast<unsigned>(). (WTF::lengthOfCharactersAsInteger): Ditto. * wtf/unicode/icu/CollatorICU.cpp: (WTF::Collator::collate): Add overflow checks with CRASH() and static_cast<unsigned>() for 'lhsLength' and 'rhsLength'. --- 23 files changed, 360 insertions(+), 109 deletions(-) 809069 1 webkit.review.bot 2013-01-16 22:04:44 -0800 Attachment 183118 did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] Source/JavaScriptCore/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] Source/WTF/wtf/FastMalloc.cpp:4640: Missing space after , [whitespace/comma] [3] Source/WTF/wtf/text/AtomicString.h:197: Place brace on its own line for function definitions. [whitespace/braces] [4] Total errors found: 4 in 23 files If any of these errors are false positives, please file a bug against check-webkit-style. 809077 2 183118 eflews.bot 2013-01-16 22:13:40 -0800 Comment on attachment 183118 Patch Attachment 183118 did not pass efl-ews (efl): Output: http://queues.webkit.org/results/15901920 809078 3 ddkilzer 2013-01-16 22:15:49 -0800 (In reply to comment #1) > Attachment 183118 [details] did not pass style-queue: > > Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 > Source/WTF/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] > Source/JavaScriptCore/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] > Source/WTF/wtf/FastMalloc.cpp:4640: Missing space after , [whitespace/comma] [3] > Source/WTF/wtf/text/AtomicString.h:197: Place brace on its own line for function definitions. [whitespace/braces] [4] > Total errors found: 4 in 23 files Fixed locally for next patch. 809081 4 ddkilzer 2013-01-16 22:16:32 -0800 (In reply to comment #2) > (From update of attachment 183118 [details]) > Attachment 183118 [details] did not pass efl-ews (efl): > Output: http://queues.webkit.org/results/15901920 /Volumes/Data/EWS/WebKit/Source/WTF/wtf/dtoa.cpp:1269:30: error: comparison of integers of different signs: 'size_t' (aka 'unsigned long') and 'type' (aka 'int') [-Werror,-Wsign-compare] if (finalTruncatedLength > std::numeric_limits<int>::max()) ~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. 809095 5 183118 buildbot 2013-01-16 22:45:41 -0800 Comment on attachment 183118 Patch Attachment 183118 did not pass mac-ews (mac): Output: http://queues.webkit.org/results/15907660 809139 6 183118 benjamin 2013-01-17 00:24:12 -0800 Comment on attachment 183118 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=183118&action=review Really nice! Notes: -The type long is a huge pain in the ass because of Windows. I am not sure we want to use it more. -Some of the Characters functions could probably use unsigned instead of size_t. This would avoids the conversions 32-64 bits. -CRASH() is not necessarily the right thing to do for overflow. Sometime we should report the error to JavaScript. We have to be careful we cannot force getting in one of this branch from JS code. -If you can split the patch in subparts, it will be easier to review :D > Source/WTF/ChangeLog:33 > + (WTF::isLeapYear): > + - Change types from int to long since most local variables for > + 'year', 'month', 'day', 'hour' and 'minute' are already type > + long. Why not go the other way around and use int for this variables? A long (64 bits on x86_64 for anything but Windows) for year, month and day seems overkill. > Source/WTF/wtf/CryptographicallyRandomNumber.cpp:103 > - addRandomData(randomness, length); > + addRandomData(randomness, static_cast<int>(length)); It would be better to change addRandomData() to take a size_t. > Source/WTF/wtf/DecimalNumber.cpp:128 > - return next - buffer; > + size_t length = next - buffer; > + if (length > std::numeric_limits<unsigned>::max()) > + CRASH(); > + > + return static_cast<unsigned>(length); That looks wrong for 32bits where sizeof(size_t) == sizeof(unsigned). I don't think you need to check for overflow (or maybe just assert for it). If next - buffer > bufferLength, something horribly wrong happened :) > Source/WTF/wtf/DecimalNumber.cpp:148 > - return next - buffer; > + size_t length = next - buffer; > + if (length > std::numeric_limits<unsigned>::max()) > + CRASH(); > + > + return static_cast<unsigned>(length); ditto. > Source/WTF/wtf/DecimalNumber.cpp:167 > - return next - buffer; > + size_t length = next - buffer; > + if (length > std::numeric_limits<unsigned>::max()) > + CRASH(); > + > + return static_cast<unsigned>(length); Ditto. > Source/WTF/wtf/DecimalNumber.cpp:212 > - return next - buffer; > + size_t length = next - buffer; > + if (length > std::numeric_limits<unsigned>::max()) > + CRASH(); > + > + return static_cast<unsigned>(length); Ditto. > Source/WTF/wtf/FastMalloc.cpp:4491 > + ASSERT(span->length <= std::numeric_limits<int>::max()); > + return static_cast<int>(span->length); Would returning size_t from visit() be an option? > Source/WTF/wtf/MD5.cpp:223 > void MD5::addBytes(const uint8_t* input, size_t length) > { > + if (length > std::numeric_limits<uint32_t>::max()) > + CRASH(); > + > + uint32_t len = static_cast<uint32_t>(length); This is odd. Which part fails with a 64bits length? Is it length < t? > Source/WTF/wtf/text/AtomicString.h:204 > + if (bLength > std::numeric_limits<unsigned>::max()) > + CRASH(); > + return equal(aImpl, b.data(), static_cast<unsigned>(bLength)); I have a bad feeling about this. I think that particular operator only exists for performance reason. > Source/WTF/wtf/text/StringConcatenate.h:226 > - , m_length(strlen(buffer)) > { > + size_t bufferLength = strlen(buffer); > + if (bufferLength > std::numeric_limits<unsigned>::max()) > + CRASH(); > + m_length = static_cast<unsigned>(bufferLength); Ouch, this one is unfortunate. I don't see a way around it. We must make a new adapter for literals. > Source/WTF/wtf/text/StringImpl.cpp:164 > + if (length > std::numeric_limits<unsigned>::max()) > + CRASH(); This should be an ASSERT. This case is already tested at compile time for the template constructor. Actually, if (!length) should also be an ASSERT. That is probably an accident. > Source/WTF/wtf/text/StringImpl.cpp:1409 > + while ((srcSegmentStart = find(pattern, static_cast<unsigned>(srcSegmentStart))) != notFound) { Hum, maybe change ::find() to return unsigned, and srcSegmentStart to unsigned? This code can loop if this->length() == numeric_limits<unsigned>::max(). (but so does the original code). 809282 7 183118 buildbot 2013-01-17 05:12:19 -0800 Comment on attachment 183118 Patch Attachment 183118 did not pass mac-wk2-ews (mac-wk2): Output: http://queues.webkit.org/results/15908989 809313 8 ddkilzer 2013-01-17 07:01:23 -0800 (In reply to comment #6) > (From update of attachment 183118 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=183118&action=review > > Really nice! > > Notes: > -The type long is a huge pain in the ass because of Windows. I am not sure we want to use it more. > -Some of the Characters functions could probably use unsigned instead of size_t. This would avoids the conversions 32-64 bits. > -CRASH() is not necessarily the right thing to do for overflow. Sometime we should report the error to JavaScript. We have to be careful we cannot force getting in one of this branch from JS code. > -If you can split the patch in subparts, it will be easier to review :D You're right, I'll do that instead and use this as an umbrella bug. Thanks for the quick review feedback! 810859 9 ddkilzer 2013-01-18 11:15:06 -0800 (In reply to comment #6) > (From update of attachment 183118 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=183118&action=review > > > Source/WTF/ChangeLog:33 > > + (WTF::isLeapYear): > > + - Change types from int to long since most local variables for > > + 'year', 'month', 'day', 'hour' and 'minute' are already type > > + long. > > Why not go the other way around and use int for this variables? > A long (64 bits on x86_64 for anything but Windows) for year, month and day seems overkill. Much of the code uses strtol() to parse the various pieces of the date string. Changing the values to int would actually increase the amount of static_cast<int>() operators that would be added to the code. :/ 810909 10 ddkilzer 2013-01-18 12:04:26 -0800 (In reply to comment #9) > (In reply to comment #6) > > (From update of attachment 183118 [details] [details]) > > View in context: https://bugs.webkit.org/attachment.cgi?id=183118&action=review > > > > > Source/WTF/ChangeLog:33 > > > + (WTF::isLeapYear): > > > + - Change types from int to long since most local variables for > > > + 'year', 'month', 'day', 'hour' and 'minute' are already type > > > + long. > > > > Why not go the other way around and use int for this variables? > > A long (64 bits on x86_64 for anything but Windows) for year, month and day seems overkill. > > Much of the code uses strtol() to parse the various pieces of the date string. Changing the values to int would actually increase the amount of static_cast<int>() operators that would be added to the code. :/ Actually, I can change parseLong() to parseInt() and put the static_cast<int>() in one place, but I'm also concerned about changing this code and making weird corner cases fail due to lack of precision when switching from long to int. I'll post both patches in another bug. 833197 11 darin 2013-02-14 10:08:56 -0800 (In reply to comment #10) > Actually, I can change parseLong() to parseInt() and put the static_cast<int>() in one place, but I'm also concerned about changing this code and making weird corner cases fail due to lack of precision when switching from long to int. To be pedantic, there is no lack of precision when switching from long to int anywhere. On 64-bit there is a lack of range when converting from long to int, but it need not be a deep subject. If the value can be out of a 32-bit number range, then we need code that properly clamps it in range, which is usually not all that challenging to write. If it can’t be out of 32-bit integer range, then there is no problem and no code is needed. 990880 12 oliver 2014-03-15 11:34:13 -0700 I have a patch that does this and adds a checked_cast<> function that will crash on overflow 990883 13 226825 oliver 2014-03-15 12:08:11 -0700 Created attachment 226825 Patch 990913 14 226825 sam 2014-03-15 18:34:38 -0700 Comment on attachment 226825 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=226825&action=review > Source/WTF/Configurations/Base.xcconfig:66 > // FIXME: <http://webkit.org/b/107093> WTF should build with -Wshorten-64-to-32 You can get rid of this FIXME. 991267 15 oliver 2014-03-17 09:51:09 -0700 (In reply to comment #14) > (From update of attachment 226825 [details]) > View in context: https://bugs.webkit.org/attachment.cgi?id=226825&action=review > > > Source/WTF/Configurations/Base.xcconfig:66 > > // FIXME: <http://webkit.org/b/107093> WTF should build with -Wshorten-64-to-32 > > You can get rid of this FIXME. This is a very early run through of WTF -- i've not even run perf tests on it O_o 1172570 16 226825 darin 2016-03-09 09:31:16 -0800 Comment on attachment 226825 Patch Clearing the review flag on this year old patch. 183118 2013-01-16 22:01:45 -0800 2013-01-17 07:01:38 -0800 Patch 20130116215846.patch text/plain 51257 ddkilzer U3VidmVyc2lvbiBSZXZpc2lvbjogMTM5OTY1CmRpZmYgLS1naXQgYS9Tb3VyY2UvSmF2YVNjcmlw dENvcmUvQ2hhbmdlTG9nIGIvU291cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwppbmRleCBl MzU0OTQwN2NjMWY1MzEzYjFmZTVjMWUwOWZmZDNhMjUwNTYzYTVlLi5mMzM2ZDZjYTc3MGQ1Y2Rm NGNmODM2ZTQwYWU0ZGQ0OGEzMWZjYTYwIDEwMDY0NAotLS0gYS9Tb3VyY2UvSmF2YVNjcmlwdENv cmUvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKQEAgLTEs MyArMSwxNiBAQAorMjAxMy0wMS0xNiAgRGF2aWQgS2lsemVyICA8ZGRraWx6ZXJAYXBwbGUuY29t PgorCisgICAgICAgIFdURiBzaG91bGQgYnVpbGQgd2l0aCAtV3Nob3J0ZW4tNjQtdG8tMzIKKyAg ICAgICAgPGh0dHA6Ly93ZWJraXQub3JnL2IvMDAwMDAwPgorICAgICAgICA8cmRhcjovL3Byb2Js 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