Fix C4334 warning about 32-bit shift assigned to 64-bits
VS 2015 has a new or louder warning about 32-bit shifts that are then
assigned to a 64-bit target. This type of code triggers it:
int64_t size = 1 << shift_amount;
Because the '1' being shifted is a 32-bit int the result of the shift
will be a 32-bit result, so assigning it to a 64-bit variable is just
misleading.
In this case the code that triggers it is this:
size_t alloc = 1<<fLgSize++;
The destination is a size_t so the warning only shows up on 64-bit
builds and doesn't indicate a real bug. But, casting the '1' constant
to size_t makes the behavior/intent more obvious and consistent and
allows enabling C4334 in Chromium.
BUG=593448
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Review URL: https://codereview.chromium.org/1845123002
1 file changed