[ clisp-Bugs-3525509 ] CLISP treats CL:REQUIRE specially at compile time

Bugs item #3525509, was opened at 2012-05-10 05:48
Message generated for change (Comment added) made by xach
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Category: clisp
Group: lisp error
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Zach Beane (xach)
Assigned to: Bruno Haible (haible)
Summary: CLISP treats CL:REQUIRE specially at compile time

Initial Comment:
I have a file "test.lisp" that contains only this:

  (require 'bogus)

When I start "clisp -ansi -norc" and issue (compile-file "test.lisp"), I get this:

    [1]> (compile-file "test.lisp")
    ;; Compiling file /home/xach/test.lisp ...
    *** - LOAD: A file with name BOGUS does not exist
    The following restarts are available:
    ABORT          :R1      Abort main loop
    Break 1 [2]> :bt
    <1/574> #<SYSTEM-FUNCTION SHOW-STACK> 3
    <2/567> #<COMPILED-FUNCTION SYSTEM::PRINT-BACKTRACE>
    <3/561> #<COMPILED-FUNCTION SYSTEM::DEBUG-BACKTRACE>
    <4/552> #<SYSTEM-FUNCTION SYSTEM::READ-EVAL-PRINT> 2
    <5/549> #<COMPILED-FUNCTION SYSTEM::BREAK-LOOP-2-3>
    <6/545> #<SYSTEM-FUNCTION SYSTEM::SAME-ENV-AS> 2
    <7/531> #<COMPILED-FUNCTION SYSTEM::BREAK-LOOP-2>
    <8/529> #<SYSTEM-FUNCTION SYSTEM::DRIVER>
    <9/489> #<COMPILED-FUNCTION SYSTEM::BREAK-LOOP>
    <10/486> #<SYSTEM-FUNCTION INVOKE-DEBUGGER> 1
    <11/481> #<SYSTEM-FUNCTION SYSTEM::ERROR-OF-TYPE>
    <12/457> #<COMPILED-FUNCTION LOAD>
    <13/443> #<COMPILED-FUNCTION SYSTEM::SIMPLE-REQUIRE>
    <14/438> #<COMPILED-FUNCTION REQUIRE>
    <15/430> #<COMPILED-FUNCTION SYSTEM::LOAD-OR-COMPILE>
    <16/425> #<COMPILED-FUNCTION SYSTEM::C-REQUIRE>
    [422] EVAL frame for form (SYSTEM::C-REQUIRE 'BOGUS)
    <17/419> #<SPECIAL-OPERATOR PROGN>
    [418] EVAL frame for form (PROGN (SYSTEM::C-REQUIRE 'BOGUS))
    <18/410> #<SYSTEM-FUNCTION EVAL>
    <19/408> #<COMPILED-FUNCTION SYSTEM::C-EVAL-AND-WRITE-LIB>
    [406] EVAL frame for form (SYSTEM::C-EVAL-AND-WRITE-LIB '(PROGN (SYSTEM::C-REQUIRE 'BOGUS)))
    <20/403> #<SPECIAL-OPERATOR PROGN>
    [402] EVAL frame for form (PROGN (SYSTEM::C-EVAL-AND-WRITE-LIB '(PROGN (SYSTEM::C-REQUIRE 'BOGUS))))
    <21/394> #<SYSTEM-FUNCTION EVAL>
    <22/387> #<COMPILED-FUNCTION SYSTEM::C-EVAL-WHEN>
    <23/365> #<COMPILED-FUNCTION SYSTEM::C-FORM>
    <24/343> #<COMPILED-FUNCTION SYSTEM::C-FORM>
    <25/340> #<COMPILED-FUNCTION SYSTEM::C-GLOBAL-FUNCTION-CALL>
    <26/319> #<COMPILED-FUNCTION SYSTEM::C-FORM>
    <27/315> #<COMPILED-FUNCTION SYSTEM::C-PROGN>
    <28/294> #<COMPILED-FUNCTION SYSTEM::C-FORM>
    <29/207> #<COMPILED-FUNCTION SYSTEM::C-LAMBDABODY>
    <30/198> #<COMPILED-FUNCTION SYSTEM::COMPILE-LAMBDABODY>
    <31/186> #<COMPILED-FUNCTION SYSTEM::COMPILE-TOPLEVEL-FORM>
    <32/42> #<COMPILED-FUNCTION COMPILE-FILE>
    [34] EVAL frame for form (COMPILE-FILE "test.lisp")
    Printed 32 frames

I am using 64-bit Linux. I get this error with CLISP 2.49 and CLISP from Mercurial.

Since REQUIRE is a function, I expected the error at runtime (when loading the file or its fasl), not at compile-time.

----------------------------------------------------------------------

>Comment By: Zach Beane (xach)
Date: 2012-05-10 05:51

Message:
Well, duh, I now see this is documented in the manual. However, this causes
a problem for  a real program that does (ignore-errors (require 'asdf)) in
an attempt to load the "system" ASDF if it is available. Since REQUIRE is
eagerly evaluated at compile time, the error isn't ignored as it should
be.

Any suggestions?

----------------------------------------------------------------------

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