tree 3be6b53adc7dd46ac8e813263e68e07aa27798a3
parent de1113b1a375c181d35082fb8797b04668b06d94
author Scott Graham <scottmg@google.com> 1549912995 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1549924294 +0000

[gn][fidl] Fix sign and shortening warnings in visitor_unittests

The upcoming zircon gn build is less lenient and reports:

../system/utest/fidl-compiler/visitor_unittests.cpp:70:32: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare]
    int expected_end = (i + 10 < strlen(expected)) ? i + 10 : strlen(expected) - 1;
                        ~~~~~~ ^ ~~~~~~~~~~~~~~~~
../system/utest/fidl-compiler/visitor_unittests.cpp:70:80: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
    int expected_end = (i + 10 < strlen(expected)) ? i + 10 : strlen(expected) - 1;
        ~~~~~~~~~~~~                                          ~~~~~~~~~~~~~~~~~^~~
../system/utest/fidl-compiler/visitor_unittests.cpp:71:30: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned long') [-Wsign-compare]
    int actual_end = (i + 10 < strlen(actual)) ? i + 10 : strlen(actual) - 1;
                      ~~~~~~ ^ ~~~~~~~~~~~~~~
../system/utest/fidl-compiler/visitor_unittests.cpp:71:74: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
    int actual_end = (i + 10 < strlen(actual)) ? i + 10 : strlen(actual) - 1;
        ~~~~~~~~~~                                        ~~~~~~~~~~~~~~~^~~
../system/utest/fidl-compiler/visitor_unittests.cpp:95:72: warning: implicit conversion loses integer precision: 'std::__2::basic_string<char, std::__2::char_traits<char>, std::__2::allocator<char> >::size_type' (aka 'unsigned long') to 'int' [-Wshorten-64-to-32]
        std::string d = targeted_diff(expected.c_str(), actual, output.size());
                        ~~~~~~~~~~~~~                           ~~~~~~~^~~~~~

As far as I could tell, I don't think any of these intend to be
negative, and now it's (somewhat) more clear that negative values will
not be passed to the string() constructor.

ZX-3415 #comment [gn][fidl] Fix sign and shortening warnings in visitor_unittests

Test: CQ
Change-Id: I83d71e95394ba1b6874a43c62c00e57f0d33e8de