From: Toon Moene <toon@moene.indiv.nluug.nl>
Date: Mon, 9 Feb 1998 21:32:13 +0000 (+0100)
Subject: backspace.c: (f_back): Use type `uiolen' to determine size of record length specifier.
X-Git-Tag: prereleases/egcs-1.0.2-prerelease~56
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=490998071c0395a1f6bfda60570dbc4e8db144ab;p=thirdparty%2Fgcc.git

backspace.c: (f_back): Use type `uiolen' to determine size of record length specifier.

        * libI77/backspace.c: (f_back): Use type `uiolen' to determine size
        of record length specifier.

From-SVN: r17815
---

diff --git a/gcc/f/runtime/ChangeLog.egcs b/gcc/f/runtime/ChangeLog.egcs
index 9f0680be7e8d..8e4683d76139 100644
--- a/gcc/f/runtime/ChangeLog.egcs
+++ b/gcc/f/runtime/ChangeLog.egcs
@@ -1,3 +1,8 @@
+Mon Feb  9 22:33:43 1998  Toon Moene  <toon@moene.indiv.nluug.nl>
+
+	* libI77/backspace.c: (f_back): Use type `uiolen' to determine size
+	of record length specifier.
+
 Tue Nov 18 09:49:04 1997  Mumit Khan   (khan@xraylith.wisc.edu)
 
 	* libI77/close.c (f_exit): Reset f__init so that f_clos does not
diff --git a/gcc/f/runtime/libI77/backspace.c b/gcc/f/runtime/libI77/backspace.c
index 8413d5f68210..14afe413a454 100644
--- a/gcc/f/runtime/libI77/backspace.c
+++ b/gcc/f/runtime/libI77/backspace.c
@@ -1,101 +1,5 @@
-#include <sys/types.h>
-#include "f2c.h"
-#include "fio.h"
-#ifdef KR_headers
-integer f_back(a) alist *a;
-#else
-integer f_back(alist *a)
-#endif
-{	unit *b;
-	int i, n, ndec;
-#if defined (MSDOS) && !defined (GO32)
-	int j, k;
-	long w, z;
-#endif
-	long x, y;
-	char buf[32];
-	if (f__init & 2)
-		f__fatal (131, "I/O recursion");
-	if(a->aunit >= MXUNIT || a->aunit < 0)
-		err(a->aerr,101,"backspace");
-	b= &f__units[a->aunit];
-	if(b->useek==0) err(a->aerr,106,"backspace");
-	if(b->ufd==NULL) {
-		fk_open(1, 1, a->aunit);
-		return(0);
-		}
-	if(b->uend==1)
-	{	b->uend=0;
-		return(0);
-	}
-	if(b->uwrt) {
-		(void) t_runc(a);
-		if (f__nowreading(b))
-			err(a->aerr,errno,"backspace");
-		}
-	if(b->url>0)
-	{
-		x=ftell(b->ufd);
-		y = x % b->url;
-		if(y == 0) x--;
-		x /= b->url;
-		x *= b->url;
-		(void) fseek(b->ufd,x,SEEK_SET);
-		return(0);
-	}
-
-	if(b->ufmt==0)
-	{	(void) fseek(b->ufd,-(long)sizeof(int),SEEK_CUR);
-		(void) fread((char *)&n,sizeof(int),1,b->ufd);
-		(void) fseek(b->ufd,-(long)n-2*sizeof(int),SEEK_CUR);
-		return(0);
-	}
-#if defined (MSDOS) && !defined (GO32)
-	w = -1;
-#endif
-	for(ndec = 1;; ndec = 0)
-	{
-		y = x = ftell(b->ufd);
-		if(x < sizeof(buf))
-			x = 0;
-		else
-			x -= sizeof(buf);
-		(void) fseek(b->ufd,x,SEEK_SET);
-		n=fread(buf,1,(size_t)(y-x), b->ufd);
-		for(i = n - ndec; --i >= 0; )
-		{
-			if(buf[i]!='\n') continue;
-#if defined (MSDOS) && !defined (GO32)
-			for(j = k = 0; j <= i; j++)
-				if (buf[j] == '\n')
-					k++;
-			fseek(b->ufd,x,SEEK_SET);
-			for(;;)
-				if (getc(b->ufd) == '\n') {
-					if ((z = ftell(b->ufd)) >= y && ndec) {
-						if (w == -1)
-							goto break2;
-						break;
-						}
-					if (--k <= 0)
-						return 0;
-					w = z;
-					}
-			fseek(b->ufd, w, SEEK_SET);
-#else
-			fseek(b->ufd,(long)(i+1-n),SEEK_CUR);
-#endif
-			return(0);
-		}
-#if defined (MSDOS) && !defined (GO32)
- break2:
-#endif
-		if(x==0)
-			{
-			(void) fseek(b->ufd, 0L, SEEK_SET);
-			return(0);
-			}
-		else if(n<=0) err(a->aerr,(EOF),"backspace");
-		(void) fseek(b->ufd, x, SEEK_SET);
-	}
-}
+	int i, ndec;
+	uiolen n;
+	{	(void) fseek(b->ufd,-(long)sizeof(uiolen),SEEK_CUR);
+		(void) fread((char *)&n,sizeof(uiolen),1,b->ufd);
+		(void) fseek(b->ufd,-(long)n-2*sizeof(uiolen),SEEK_CUR);