diff options
Diffstat (limited to 'include/ruby/io.h')
| -rw-r--r-- | include/ruby/io.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/ruby/io.h b/include/ruby/io.h index 60d6f6d32e..cde932ff32 100644 --- a/include/ruby/io.h +++ b/include/ruby/io.h @@ -12,6 +12,10 @@ #ifndef RUBY_IO_H #define RUBY_IO_H 1 +#ifdef RUBY_INTERNAL_H +#error "Include this file before internal.h" +#endif + #if defined(__cplusplus) extern "C" { #if 0 |