diff options
Diffstat (limited to 'test-delta.c')
| -rw-r--r-- | test-delta.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/test-delta.c b/test-delta.c index 1be8ee0..cc05794 100644 --- a/test-delta.c +++ b/test-delta.c @@ -38,7 +38,10 @@ int main(int argc, char *argv[]) return 1; } from_size = st.st_size; - from_buf = mmap(NULL, from_size, PROT_READ, MAP_PRIVATE, fd, 0); + if (from_size) + from_buf = mmap(NULL, from_size, PROT_READ, MAP_PRIVATE, fd, 0); + else + from_buf = ""; if (from_buf == MAP_FAILED) { perror(argv[2]); close(fd); @@ -52,7 +55,11 @@ int main(int argc, char *argv[]) return 1; } data_size = st.st_size; - data_buf = mmap(NULL, data_size, PROT_READ, MAP_PRIVATE, fd, 0); + + if (data_size) + data_buf = mmap(NULL, data_size, PROT_READ, MAP_PRIVATE, fd, 0); + else + data_buf = ""; if (data_buf == MAP_FAILED) { perror(argv[3]); close(fd); |