/* Make sure PFILE->token_buffer has space for at least N more characters. */
#define CPP_RESERVE(PFILE, N) \
- (CPP_WRITTEN (PFILE) + N > (PFILE)->token_buffer_size \
+ ((int) (CPP_WRITTEN (PFILE) + N) > (PFILE)->token_buffer_size \
&& (cpp_grow_buffer (PFILE, N), 0))
/* Append string STR (of length N) to PFILE's output buffer.