Jonathan Gopel b3a4f28ad1 Fix implicit signedness conversion warning (#1963) ...

Problem:
- On Apple clang 11.0.3 (clang-1103.0.32.62), pedantic mode compilation
  generates the following error:

    test/std-format-test.cc:114:22: error: implicit conversion changes
          signedness: 'int' to 'size_t' (aka 'unsigned long')
          [-Werror,-Wsign-conversion]
        width_arg_id = c - '0';
                     ~ ~~^~~~~

Solution:
- Use a `to_unsigned` to make the conversion explicit. This is
  guaranteed to be safe due to the check before the ASCII-to-int
  conversion.

2020-10-29 06:26:18 -07:00

5.2 KiB

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