222c222
< if (p1[s1.st_size-1] != '\n') {
---
> if (s1.st_size && p1[s1.st_size-1] != '\n') {
230c230
< if (p2[s2.st_size-1] != '\n') {
---
> if (s2.st_size && p2[s2.st_size-1] != '\n') {