[M3commit] alloca(jmpbuf_size) is in

[Jay K]

I've seen it work now on AMD64_LINUX, SPARC32_SOLARIS, and I386_DARWIN 10.5.8.I think MacOSX 10.10.4 has something else wrong with it that'll take a while to figure out.

So I commited it again.

PLEASE NOTE that the upgrade procedure is tricky like with cm3cg, but the results of getting it wrong are worse than the recent round of cm3cg changes.You will get runtime crashes.


upgrade.py and upgrade-full.sh and likely upgrade.sh all do the right thing, same as always.

Not only is cm3 closely tied with cm3cg, but it also closely tied with m3core.The compiler and runtime collaborate on producing and consuming certain data structures,and these data structures have changed now.


At least it should be more debuggable now with the C backend -- so I can see local variables for example.Fixing cm3cg to work with plain -g would be good.

Is anyone else running 10.10?

Thanks, - Jay


From: jay.krell at cornell.edu
To: m3commit at elegosoft.com
Date: Sat, 8 Aug 2015 18:59:55 +0000
Subject: Re: [M3commit] [modula3/cm3] 57ad34: Revert "allocate jmpbufs with alloca(external vari...




I believe this is working ok on MacOS X 10.5.8 with cm3cg and C backend.However things do not work on 10.10.4. I'm guessing for another unknownreason but I want to debug that separately for now.
If anyone else can give the previous a try on their configuration, that'd be appreciated.(In github app, you can revert my revert. I haven't found how to do w/ git command line).
Thank you.
Specifically on 10.0.4 I get:
* thread #1: tid = 0x3a9861, 0x002b7360 cm3`RTAllocator__GetTracedObj + 36, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x24)    frame #0: 0x002b7360 cm3`RTAllocator__GetTracedObj + 36  * frame #1: 0x002b6e90 cm3`RTHooks__AllocateTracedObj + 17    frame #2: 0x00281272 cm3`TextUtils_M3 + 49    frame #3: 0x002c705c cm3`RTLinker__RunMainBody + 763    frame #4: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #5: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #6: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #7: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #8: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #9: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #10: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #11: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #12: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #13: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #14: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #15: 0x002c6f2d cm3`RTLinker__RunMainBody + 460    frame #16: 0x002c64e8 cm3`RTLinker__AddUnitI + 287    frame #17: 0x002c6563 cm3`RTLinker__AddUnit + 116    frame #18: 0x00002341 cm3`main(argc=1, argv=0xbffffca8, envp=0xbffffcb0) + 97 at _m3main.c:22    frame #19: 0x9518e6d9 libdyld.dylib`start + 1

  - Jay

Date: Sat, 8 Aug 2015 11:49:10 -0700
From: jay.krell at cornell.edu
To: m3commit at elegosoft.com
Subject: [M3commit] [modula3/cm3] 57ad34: Revert "allocate jmpbufs with alloca(external vari...

  Branch: refs/heads/master
  Home:   https://github.com/modula3/cm3
  Commit: 57ad34f5034d5000bd5d63fb384851921bc782a1
      https://github.com/modula3/cm3/commit/57ad34f5034d5000bd5d63fb384851921bc782a1
  Author: jaykrell <jay.krell at cornell.edu>
  Date:   2015-08-08 (Sat, 08 Aug 2015)
 
  Changed paths:
    M m3-libs/m3core/src/runtime/ex_frame/RTExFrame.m3
    M m3-sys/m3back/src/M3C.m3
    M m3-sys/m3cc/gcc/gcc/m3cg/parse.c
    R m3-sys/m3front/src/misc/Jmpbufs.i3
    R m3-sys/m3front/src/misc/Jmpbufs.m3
    M m3-sys/m3front/src/misc/M3.i3
    M m3-sys/m3front/src/misc/Marker.i3
    M m3-sys/m3front/src/misc/Marker.m3
    M m3-sys/m3front/src/misc/m3makefile
    M m3-sys/m3front/src/stmts/TryFinStmt.m3
    M m3-sys/m3front/src/stmts/TryStmt.m3
    M m3-sys/m3front/src/values/Module.i3
    M m3-sys/m3front/src/values/Module.m3
    M m3-sys/m3front/src/values/Procedure.m3
    M m3-sys/m3middle/src/M3RT.m3
    M m3-sys/m3middle/src/Target.i3
    M m3-sys/m3middle/src/Target.m3
 
  Log Message:
  -----------
  Revert "allocate jmpbufs with alloca(external variable initialized in C)"
 
This reverts commit 44fbd1608a73affa0625a9df4bff1c7248cc6f3c.
 
 

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