diff options
Diffstat (limited to 'iperlsys.h')
| -rw-r--r-- | iperlsys.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/iperlsys.h b/iperlsys.h index 6c093dd53f..237fab26d6 100644 --- a/iperlsys.h +++ b/iperlsys.h @@ -303,7 +303,17 @@ struct IPerlStdIOInfo #define PerlSIO_fputs(f,s) fputs(s,f) #define PerlSIO_fflush(f) Fflush(f) #define PerlSIO_fgets(s, n, fp) fgets(s,n,fp) -#define PerlSIO_ungetc(c,f) ungetc(c,f) +#if defined(VMS) && defined(__DECC) + /* Unusual definition of ungetc() here to accomodate fast_sv_gets()' + * belief that it can mix getc/ungetc with reads from stdio buffer */ + int decc$ungetc(int __c, FILE *__stream); +# define PerlSIO_ungetc(c,f) ((c) == EOF ? EOF : \ + ((*(f) && !((*(f))->_flag & _IONBF) && \ + ((*(f))->_ptr > (*(f))->_base)) ? \ + ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,f))) +#else +# define PerlSIO_ungetc(c,f) ungetc(c,f) +#endif #define PerlSIO_fileno(f) fileno(f) #define PerlSIO_fdopen(f, s) fdopen(f,s) #define PerlSIO_freopen(p, m, f) freopen(p,m,f) |