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It is implementation defined whether the specifier int designates the same type as signed int or the same type as unsigned int for bit-fields. According to C99 [ISO/IEC 9899:1999], C integer promotions also require that "if an int can represent all values of the original type, the value is converted to an int; otherwise, it is converted to an unsigned int."
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\[[ISO/IEC 9899:1999|AA. References#ISOBibliography#ISO/IEC 9899-1999]\] Section 6.7.2, "Type specifiers" \[[ISO/IEC PDTR 24772|AA. References#ISOBibliography#ISO/IEC PDTR 24772]\] "STR Bit Representations" \[[MISRA 04|AA. References#MISRABibliography#MISRA 04]\] Rule 12.7 |
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INT11-C. Take care when converting from pointer to integer or integer to pointer 04. Integers (INT)