fread: do not try to read if EOF flag is set.

This behavior is implied by the specification of fread in terms of fgetc.
2022-07-03 20:04:12 -05:00 · 2022-07-03 20:04:12 -05:00 · 89b501f259
parent ef63f26c4f
commit 89b501f259
1 changed files with 4 additions and 0 deletions
--- a/stdio.asm
+++ b/stdio.asm
@ -1613,6 +1613,10 @@ p        equ   5
         ph4   <stream                  verify that stream exists
         jsl   ~VerifyStream
         jcs   lb6
+         ldy   #FILE_flag               quit if end of file has been reached
+         lda   [stream],Y
+         bit   #_IOEOF
+         jne   lb6
         mul4  element_size,count,rdRequestCount set the # of bytes
         move4 rdRequestCount,temp      save full request count
 pb1      lda   rdRequestCount           quit if the request count is 0