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I got #0 fprintf (stream=0x4014fc60, format=0x40147f82 "free(): invalid pointer %p!\n") at fprintf.c:31 #1 0x400a90f4 in free_check (mem=0x4001d000, caller=0x400a2e2b) at malloc.c:4542 #2 0x400a6e1d in __libc_free (mem=0x4001d000) at malloc.c:3012 #3 0x400a2e2b in __underflow (fp=0x80fbee0) at genops.c:167 #4 0x400a24a5 in _IO_file_xsgetn (fp=0x80fbee0, data=0xbffff3e0, n=40) at fileops.c:970 #5 0x400a37f2 in _IO_sgetn (fp=0x80fbee0, data=0xbffff3e0, n=40) at genops.c:448 #6 0x40098847 in _IO_fread (buf=0xbffff3e0, size=1, count=40, fp=0x80fbee0) at iofread.c:42 #7 0x80648ce in bfd_read (ptr=0xbffff3e0, size=40, nitems=1, abfd=0x81abd78) The problem is free (fp->_IO_save_base); in _IO_free_backup_area () in genops.c. Please keep in mind that libio uses ALLOC_BUF for main buffer allocation, which calls mmap. But malloc/free is used for _IO_save_base. When we switch between backup and main buffer, we have to be very careful. Otherwise, we will be screwed. I will see what I can do. -- H.J. Lu (hjl@gnu.org)
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