Fix MM doc's use of "SUPER::"

[p5sagit/p5-mst-13.2.git] / perlsdio.h

diff --git a/perlsdio.h b/perlsdio.h
index ff32cdd..97add0f 100644 (file)
--- a/perlsdio.h
+++ b/perlsdio.h
@@ -16,7 +16,6 @@
 #define PerlIO_printf                  fprintf
 #define PerlIO_stdoutf                 printf
 #define PerlIO_vprintf(f,fmt,a)                vfprintf(f,fmt,a)          
-#define PerlIO_read(f,buf,count)       fread(buf,1,count,f)
 #define PerlIO_write(f,buf,count)      fwrite1(buf,1,count,f)
 #define PerlIO_open                    fopen
 #define PerlIO_fdopen                  fdopen
@@ -24,8 +23,29 @@
 #define PerlIO_close(f)                        fclose(f)
 #define PerlIO_puts(f,s)               fputs(s,f)
 #define PerlIO_putc(f,c)               fputc(c,f)
-#define PerlIO_ungetc(f,c)             ungetc(c,f)
-#define PerlIO_getc(f)                 getc(f)
+#if defined(VMS)
+#  if 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$ungetc(int __c, FILE *__stream);
+#    define PerlIO_ungetc(f,c) ((c) == EOF ? EOF : \
+            ((*(f) && !((*(f))->_flag & _IONBF) && \
+            ((*(f))->_ptr > (*(f))->_base)) ? \
+            ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,f)))
+#  else
+#    define PerlIO_ungetc(f,c)         ungetc(c,f)
+#  endif
+   /* Work around bug in DECCRTL/AXP (DECC v5.x) and some versions of old
+    * VAXCRTL which causes read from a pipe after EOF has been returned
+    * once to hang.
+    */
+#  define PerlIO_getc(f)               (feof(f) ? EOF : getc(f))
+#  define PerlIO_read(f,buf,count)     (feof(f) ? 0 : fread(buf,1,count,f))
+#else
+#  define PerlIO_ungetc(f,c)           ungetc(c,f)
+#  define PerlIO_getc(f)               getc(f)
+#  define PerlIO_read(f,buf,count)     fread(buf,1,count,f)
+#endif
 #define PerlIO_eof(f)                  feof(f)
 #define PerlIO_getname(f,b)            fgetname(f,b)
 #define PerlIO_error(f)                        ferror(f)
@@ -142,6 +162,8 @@
 #undef setvbuf
 #undef fscanf
 #undef fgets
+#undef getc_unlocked
+#undef putc_unlocked
 #define fprintf    _CANNOT _fprintf_
 #define stdin      _CANNOT _stdin_
 #define stdout     _CANNOT _stdout_