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Generate errors for implicit conversions that may alter a value, that covers conversions implicit conversions to narrower types, different signal, different essential types (float -> int), ... From GCC documentation (https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/Warning-Options.html) """ 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. For C++, also warn for confusing overload resolution for user-defined conversions; and conversions that never use a type conversion operator: conversions to void, the same type, a base class or a reference to them. Warnings about conversions between signed and unsigned integers are disabled by default in C++ unless -Wsign-conversion is explicitly enabled. """ This partially cover rules: 10.4, 10.5, 10.6, 10.7 and 10.8 Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com> |
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