Fix a win32 warning message

[libgit2.git] / src / fileops.c

diff --git a/src/fileops.c b/src/fileops.c
index 6e45ff8a8bc65185d6a77bc2f60444a81551d2d8..856823afb25b7160c13a5ed0f10c137f2a87d814 100644 (file)
--- a/src/fileops.c
+++ b/src/fileops.c
@@ -180,8 +180,11 @@ int git_futils_mmap_ro(git_map *out, git_file fd, git_off_t begin, size_t len)
 int git_futils_mmap_ro_file(git_map *out, const char *path)
 {
        git_file fd = p_open(path, O_RDONLY /* | O_NOATIME */);
-       size_t len = git_futils_filesize(fd);
-       int result = git_futils_mmap_ro(out, fd, 0, len);
+       git_off_t len = git_futils_filesize(fd);
+       int result;
+       if (!git__is_sizet(len))
+               return git__throw(GIT_ERROR, "File `%s` too large to mmap", path);
+       result = git_futils_mmap_ro(out, fd, 0, (size_t)len);
        p_close(fd);
        return result;
 }