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From the page you linked: -Wconversion Warn for implicit conversions that may alter a value. This includes conversions between real and integer, like abs (x) when x is double; conversions betwe...
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#1: Initial revision
by
r~~
·
2021-04-22T02:31:12Z (over 3 years ago)
From [the page you linked](https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html): > `-Wconversion` > > Warn for implicit conversions that may alter a value. This includes conversions between real and integer, like `abs (x)` when `x` is `double`; conversions between signed and unsigned, like `unsigned ui = -1`; and conversions to smaller types, like `sqrtf (M_PI)`. Do not warn for explicit casts like `abs ((int) x)` and `ui = (unsigned) -1`, or if the value is not changed by the conversion like in `abs (2.0)`. Warnings about conversions between signed and unsigned integers can be disabled by using `-Wno-sign-conversion`.