X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perlsdio.h;h=5a15a719ca76bf1a921c0468f0f233eba4bbdcc3;hb=ba51d756f9ffaa3939ada6861397f27ce3967220;hp=c3714410d6f8472d405c6711eb1b00df50e62974;hpb=1ac5d68dd01b70b178f94cd2fc2f57c48fe8d1a5;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/perlsdio.h b/perlsdio.h
index c371441..5a15a71 100644
--- 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
@@ -24,18 +23,31 @@
 #define PerlIO_close(f)			fclose(f)
 #define PerlIO_puts(f,s)		fputs(s,f)
 #define PerlIO_putc(f,c)		fputc(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$ungetc(int __c, FILE *__stream);
-#  define PerlIO_ungetc(f,c) ((c) == EOF ? EOF : \
-          ((*(f) && !((*(f))->_flag & _IONBF) && \
-          ((*(f))->_ptr > (*(f))->_base)) ? \
-          ((*(f))->_cnt++, *(--(*(f))->_ptr) = (c)) : decc$ungetc(c,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 : (SSize_t)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)	(SSize_t)fread(buf,1,count,f)
 #endif
-#define PerlIO_getc(f)			getc(f)
 #define PerlIO_eof(f)			feof(f)
 #define PerlIO_getname(f,b)		fgetname(f,b)
 #define PerlIO_error(f)			ferror(f)
@@ -94,7 +106,7 @@
 #define PerlIO_has_cntptr(f)		0
 #define PerlIO_canset_cnt(f)		0
 #define PerlIO_get_cnt(f)		(abort(),0)
-#define PerlIO_get_ptr(f)		(abort(),0)
+#define PerlIO_get_ptr(f)		(abort(),(void *)0)
 #define PerlIO_set_cnt(f,c)		abort()
 #define PerlIO_set_ptrcnt(f,p,c)	abort()
 
@@ -111,7 +123,7 @@
 #define PerlIO_get_bufsiz(f)		FILE_bufsiz(f)       
 #else
 #define PerlIO_has_base(f)		0
-#define PerlIO_get_base(f)		(abort(),0)
+#define PerlIO_get_base(f)		(abort(),(void *)0)
 #define PerlIO_get_bufsiz(f)		(abort(),0)
 #endif
 #else /* PERLIO_IS_STDIO */