Add deltifier test.

[thirdparty/git.git] / test-delta.c

diff --git a/test-delta.c b/test-delta.c
index 37ef86b283c2378017f1fc6bff05cc33fb25d7aa..cc05794ec0b69aa2a05f7d02a412e18c87687047 100644 (file)
--- a/test-delta.c
+++ b/test-delta.c
@@ -17,7 +17,7 @@
 #include <sys/mman.h>
 #include "delta.h"
 
-static const char *usage =
+static const char usage[] =
        "test-delta (-d|-p) <from_file> <data_file> <out_file>";
 
 int main(int argc, char *argv[])
@@ -38,9 +38,13 @@ 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);
                return 1;
        }
        close(fd);
@@ -51,9 +55,14 @@ 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);
                return 1;
        }
        close(fd);