tree b146cda66004e346e8665b8fe03bfbd066780597
parent 53d3a99cccf08016eff0351884e7e86a658dffd6
author Lucas De Marchi <lucas.demarchi@intel.com> 1470843732 -0300
committer Lucas De Marchi <lucas.demarchi@intel.com> 1470843936 -0300

util: fix warning of equal values on logical OR

shared/util.c: In function ‘read_str_safe’:
shared/util.c:211:24: warning: logical ‘or’ of equal expressions [-Wlogical-op]
    if (errno == EAGAIN || errno == EWOULDBLOCK ||
                        ^~
shared/util.c: In function ‘write_str_safe’:
shared/util.c:237:24: warning: logical ‘or’ of equal expressions [-Wlogical-op]
    if (errno == EAGAIN || errno == EWOULDBLOCK ||
                        ^~

This is because EAGAIN and EWOULDBLOCK have the same value. Prefer
EAGAIN, but add a static assert to catch if it's not the same in another
architecture.