implicit_cast<> only performs a cast in cases where an implicit
conversion would be possible. It’s even safer than static_cast<> It’s an
“explicit implicit” cast, which is not normally necsesary, but is
frequently required when working with the ?: operator, functions like
std::min() and std::max(), and logging and testing macros.
The public style guide does not mention implicit_cast<> only because it
is not part of the standard library, but would otherwise require it in
these situations. Since base does provide implicit_cast<>, it should be
used whenever possible.
The only uses of static_cast<> not converted to implicit_cast<> are
those that require static_cast<>, such as those that assign an integer
constant to a variable of an enum type.
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/700383007
Not doing this causes gtest to issue these warnings:
[WARNING] ../../third_party/gtest/gtest/src/gtest-death-test.cc:825::
Death tests use fork(), which is unsafe particularly in a threaded
context. For this test, Google Test detected 4 threads.
The gtest documentation recommends giving the test case a name ending in
DeathTest. Test cases named according to this convention run before all
other tests. Other death tests in Crashpad also follow this convention.
https://code.google.com/p/googletest/wiki/AdvancedGuide#Death_Tests_And_Threads
TEST=util_test HTTPMultipartBuilderDeathTest.*
R=rsesek@chromium.org
Review URL: https://codereview.chromium.org/694963002
