Compiling diffutils from git shows for example
In file included from ../../src/cmp.c:19:
../../src/cmp.c: In function 'cmp':
../../src/system.h:108:24: warning: comparison of integer expressions of
different signedness: 'off_t' {aka 'long int'} and 'size_t' {aka 'long unsigned
int'} [-Wsign-compare]
108 | #define MIN(a, b) ((a) <= (b) ? (a) : (b))
| ^~
../../src/cmp.c:419:38: note: in expansion of macro 'MIN'
419 | size_t bytes_to_read = MIN (ig, buf_size);
| ^~~
../../src/system.h:108:33: warning: operand of '?:' changes signedness from
'off_t' {aka 'long int'} to 'size_t' {aka 'long unsigned int'} due to
unsignedness of other operand [-Wsign-compare]
108 | #define MIN(a, b) ((a) <= (b) ? (a) : (b))
| ^~~
../../src/cmp.c:419:38: note: in expansion of macro 'MIN'
419 | size_t bytes_to_read = MIN (ig, buf_size);
| ^~~
../../src/cmp.c:439:25: warning: comparison of integer expressions of different
signedness: 'intmax_t' {aka 'long int'} and 'size_t' {aka 'long unsigned int'}
[-Wsign-compare]
439 | if (remaining < bytes_to_read)
| ^
Total number is 26.
