Em 07/12/2014 03:06, <brz-systemd-dev@intma.in> escreveu:
>
> I seem to be finding conflicting definitions of strchr
>
> strcat(2)
>         char* strchr(char *s, char c)
>
> /sys/src/libc/port/strchr.c
>         char* strchr(char *s, int c)
>
> /sys/include/libc.h:/strchr/
>         extern  char*   strchr(char*, int);
>
> So it seems like it takes an int, rather than a char.
> But referencing the 386 asm, this is seen.
> /sys/src/libc/386/strchr.s:4: MOVB c+4(FP), AX
>                                            (^ Why a 16-bit register?)
> Is there a reason for these seemingly divergent definitions?

The 386 assembler does not do 16 bit, i.e. AX there is 32 bits long.