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Hi! I think the patch is self-explaining and I'm not sure how useful is to include a testcase for this into the testsuite (on ia64 ld could not link crti.o because it was trying to fseek to a location in the file which contained '\xff'). 2002-02-19 Jakub Jelinek <jakub@redhat.com> * libio/fileops.c (_IO_file_underflow_mmap): Cast to unsigned char pointer before dereferencing. --- libc/libio/fileops.c.jj Wed Jan 30 18:01:24 2002 +++ libc/libio/fileops.c Tue Feb 19 01:42:56 2002 @@ -579,7 +579,7 @@ _IO_file_underflow_mmap (_IO_FILE *fp) fp->_offset = fp->_IO_buf_end - fp->_IO_buf_base; fp->_IO_read_end = fp->_IO_buf_end; - return *fp->_IO_read_ptr; + return *(unsigned char *) fp->_IO_read_ptr; } fp->_flags |= _IO_EOF_SEEN; Jakub
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