Number: 2222

Date: 21-Sep-84 14':54':34

Submitter: Roach

Source: Roach

Subject: \BACKPEEKBIN over IMAGEOBJ at BOF breaks

Assigned To: 

Attn: SYBALSKY

Status: Open

In/By: 

Problem Type: Bug

Impact: Serious

Difficulty: 

Frequency: Everytime

Priority: Perhaps

System: Text

Subsystem: TEdit

Machine: 1100

Disk: 

Lisp Version: 19-Sep-84 12':36':46

Source Files: 

Microcode Version: 5121

Memory Size: 2688

File Server: 

Server Software Version: 

Disposition: '
["Sannella.PA" "21-Sep-84 15':59':26" Subject': Status':(New->Open) Priority':(->Perhaps)]

Description: When the first character in TEXTSTREAM is an IMAGEOBJ, (GETFILEPTR TEXTSTREAM) = 1, and you do (\BACKPEEKBIN TEXTSTREAM), you get the break "Trying to BACKFILEPTR thru start of text" with stack'
     \TEXTBACKFILEPTR'
     \BACKFILEPTR'
     \BACKPEEKBIN'
I''ve marked this problem serious since there seem to be a variety of other bad symptoms involving file ptr manipulation in the presence of IMAGEOBJs at and/or near the beginning of your file, including dropping into RAID (error in uninterruptable system code underneath \TEXTBACKFILEPTR), and "CAN''T GET TO NEXT PIECE".

Workaround: 

Test Case: 

Edit-By: Sannella.PA

Edit-Date: 21-Sep-84 15':59':26