In the fuzz test, improve the calculation of damaging bytes so as to

make at least one byte damage of the sample file even if its size is less than 100 bytes.

SVN-Revision: 3440

diff --git a/libarchive/test/test_fuzz.c b/libarchive/test/test_fuzz.c
index f810fbeb5fa12ad938dbda572fd70e3ad867afa3..978898ee6729511b4db18cccb5ce32d57da028b5 100644 (file)
--- a/libarchive/test/test_fuzz.c
+++ b/libarchive/test/test_fuzz.c
@@ -89,7 +89,7 @@ DEFINE_TEST(test_fuzz)
                struct archive *a;
                char *rawimage, *image;
                size_t size;
-               int i;
+               int i, q;
 
                extract_reference_file(filename);
                if (files[n].uncompress) {
@@ -136,7 +136,9 @@ DEFINE_TEST(test_fuzz)
 
                        /* Fuzz < 1% of the bytes in the archive. */
                        memcpy(image, rawimage, size);
-                       numbytes = (int)(rand() % (size / 100));
+                       q = size / 100;
+                       if (!q) q = 1;
+                       numbytes = (int)(rand() % q);
                        for (j = 0; j < numbytes; ++j)
                                image[rand() % size] = (char)rand();