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-rw-r--r--lzf_c.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/lzf_c.c b/lzf_c.c
index 98371c5..bf86f1d 100644
--- a/lzf_c.c
+++ b/lzf_c.c
@@ -256,7 +256,7 @@ lzf_compress (const void *const in_data, unsigned int in_len,
}
}
- if (op + lit + 2 >= out_end)
+ if (op + 2 >= out_end)
return 0;
while (ip < in_end)
@@ -265,7 +265,8 @@ lzf_compress (const void *const in_data, unsigned int in_len,
*op++ = *ip++;
}
- op [- lit - 1] = lit - 1;
+ op [- lit - 1] = lit - 1; /* end run */
+ op -= !lit; /* undo run if length is zero */
return op - (u8 *)out_data;
}