On 02/21/18 10:10, Benno Rice wrote:
> Curiously, changing whitespace seems to cause the md5 of the .o files to
> differ
> these days hence the following testing strategy:
>
> Tested by: objdump -d | md5 (both in-tree clang and lang/gcc6)
Is this simply because line numbers are changing? That isn't new; I remember
a case where a security advisory touched a .h file and suddenly a huge number
of binaries changed because they included header file line numbers.
> static inline int
> strcmp(const char *s1, const char *s2)
> {
> - for (; *s1 == *s2 && *s1; s1++, s2++);
> - return (unsigned char)*s1 - (unsigned char)*s2;
> +
> + for (; *s1 == *s2 && *s1; s1++, s2++);
> + return (unsigned char)*s1 - (unsigned char)*s2;
> }
--
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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