ChangeLog

2017-07-14  Michael Catanzaro  <mcatanzaro@igalia.com>

        -Wformat-truncation warning in ConfigFile.cpp

        https://bugs.webkit.org/show_bug.cgi?id=174506

        Reviewed by NOBODY (OOPS!).

        Check if the JSC config filename would be truncated due to exceeding max path length. If so,

        return ParseError.

        * runtime/ConfigFile.cpp:

        (JSC::ConfigFile::parse):

2017-07-14  Yusuke Suzuki  <utatane.tea@gmail.com>

        [WTF] Use std::unique_ptr for StackTrace

Source/JavaScriptCore/runtime/ConfigFile.cpp

@@void ConfigFile::parse()

        char* filename = nullptr;

        if (scanner.tryConsume('=') && (filename = scanner.tryConsumeString())) {

            if (statementNesting != NestedStatementFailedCriteria) {

                if (filename[0] != '/')

                    snprintf(logPathname, s_maxPathLength + 1, "%s/%s", m_configDirectory, filename);

                else

                if (filename[0] != '/') {

                    int written = snprintf(logPathname, s_maxPathLength + 1, "%s/%s", m_configDirectory, filename);

                    // Filename truncated?

                    if (written < 0 || static_cast<unsigned>(written) >= s_maxPathLength + 1)

                        return ParseError;

                } else

                    strncpy(logPathname, filename, s_maxPathLength);

            }