On Wed, 18 Dec 2019, Paul Eggert wrote:
; On 12/18/19 10:22 PM, Akim Demaille wrote: ; > I was unable to reproduce that warning (https://travis-ci.org/akimd/bison/builds/626034753) ; ; I suspect you need a platform where plain 'char' is unsigned, so that 'typedef ; yytype_uint8 yy_state_t;' is treated as if it were 'typedef char yy_state_t;' ; which means yy_state_t indexes provoke the diagnostic. (A GCC bug, if you ask me.) Given this in the template: #if defined __UINT_LEAST8_MAX__ && __UINT_LEAST8_MAX__ <= __INT_MAX__ typedef __UINT_LEAST8_TYPE__ yytype_uint8; #elif (!defined __UINT_LEAST8_MAX__ && defined YY_STDINT_H \ && UINT_LEAST8_MAX <= INT_MAX) typedef uint_least8_t yytype_uint8; #elif !defined __UINT_LEAST8_MAX__ && UCHAR_MAX <= INT_MAX typedef unsigned char yytype_uint8; #else typedef short yytype_uint8; #endif and this from gcc: #define __UINT_LEAST8_MAX__ 0xff #define __INT_MAX__ 0x7fffffff #define __UINT_LEAST8_TYPE__ unsigned char It's the first part of the clause that is being selected and ending up with typedef unsigned char yytype_uint8; Andy
