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bug#69749: (bindat-type sint 32 t) -> unbound variable bitlen
From: |
Eric Marsden |
Subject: |
bug#69749: (bindat-type sint 32 t) -> unbound variable bitlen |
Date: |
Tue, 12 Mar 2024 16:18:58 +0100 |
User-agent: |
Mozilla Thunderbird |
-- file bd.el
(require 'bindat)
(bindat-pack (bindat-type sint 32 t) 42)
--
emacs -Q --batch -l bd.el -->
Error: void-variable (bitlen)
mapbacktrace(#f(compiled-function (evald func args flags) #<bytecode
-0x160fbb9816517825>))
debug-early-backtrace()
debug-early(error (void-variable bitlen))
(/ bitlen 8)
(+ bindat-idx (/ bitlen 8))
(setq bindat-idx (+ bindat-idx (/ bitlen 8)))
(let ((v field2)) (setq bindat-idx (+ bindat-idx (/ bitlen 8))))
(let ((field2 (if (< v 0) (+ v wrap) v))) (let ((v field2)) (setq
bindat-idx (+ bindat-idx (/ bitlen 8)))))
(let ((v v)) (let ((field2 (if (< v 0) (+ v wrap) v))) (let ((v
field2)) (setq bindat-idx (+ bindat-idx (/ bitlen 8))))))
(lambda (v) (let ((v v)) (let ((field2 (if (< v 0) (+ v wrap) v)))
(let ((v field2)) (setq bindat-idx (+ bindat-idx (/ bitlen 8)))))))(42)
bindat--length-group(42 #s(bindat--type :le (lambda (v) (let ((v v))
(let ((field2 (if (< v 0) (+ v wrap) v))) (let ((v field2)) (setq
bindat-idx (+ bindat-idx (/ bitlen 8))))))) :ue (lambda nil (let ((n (if
t (bindat--unpack-uintr bitlen) (bindat--unpack-uint bitlen)))) (if (>=
n max) (- n wrap) n))) :pe (lambda (v) (let ((v v)) (let ((field2 (if (<
v 0) (+ v wrap) v))) (let ((v field2)) (if t (bindat--pack-uintr bitlen
v) (bindat--pack-uint bitlen v))))))))
bindat-length(#s(bindat--type :le (lambda (v) (let ((v v)) (let
((field2 (if (< v 0) (+ v wrap) v))) (let ((v field2)) (setq bindat-idx
(+ bindat-idx (/ bitlen 8))))))) :ue (lambda nil (let ((n (if t
(bindat--unpack-uintr bitlen) (bindat--unpack-uint bitlen)))) (if (>= n
max) (- n wrap) n))) :pe (lambda (v) (let ((v v)) (let ((field2 (if (< v
0) (+ v wrap) v))) (let ((v field2)) (if t (bindat--pack-uintr bitlen v)
(bindat--pack-uint bitlen v))))))) 42)
bindat-pack(#s(bindat--type :le (lambda (v) (let ((v v)) (let
((field2 (if (< v 0) (+ v wrap) v))) (let ((v field2)) (setq bindat-idx
(+ bindat-idx (/ bitlen 8))))))) :ue (lambda nil (let ((n (if t
(bindat--unpack-uintr bitlen) (bindat--unpack-uint bitlen)))) (if (>= n
max) (- n wrap) n))) :pe (lambda (v) (let ((v v)) (let ((field2 (if (< v
0) (+ v wrap) v))) (let ((v field2)) (if t (bindat--pack-uintr bitlen v)
(bindat--pack-uint bitlen v))))))) 42)
load-with-code-conversion("/tmp/bd.el" "/tmp/bd.el" nil t)
command-line-1(("-l" "/tmp/bd.el"))
command-line()
normal-top-level()
Symbol’s value as variable is void: bitlen
This bug is difficult to understand. Run from an IELM buffer, this code
works as expected. The macroexpansion of the bindat-type declaration
includes a binding for bitlen.
GNU Emacs 29.2 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.41,
cairo version 1.18.0) of 2024-03-09, modified by Debian
- bug#69749: (bindat-type sint 32 t) -> unbound variable bitlen,
Eric Marsden <=