GZ_SUFFIX
#ifndef GZ_SUFFIX
#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)
if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) {
snprintf(outfile, sizeof(outfile), "%s%s", file, GZ_SUFFIX);
strcat(outfile, GZ_SUFFIX);
if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {
snprintf(buf + len, sizeof(buf) - len, "%s", GZ_SUFFIX);
strcat(infile, GZ_SUFFIX);