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assembly labels loop on huge generated .ml files #4869

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vicuna opened this issue Sep 18, 2009 · 4 comments

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commented Sep 18, 2009

Original bug ID: 4869
Reporter: louis
Assigned to: @xavierleroy
Status: closed (set by @xavierleroy on 2012-09-25T18:07:21Z)
Resolution: fixed
Priority: normal
Severity: minor
Version: 3.11.1
Fixed in version: 3.13.0+dev
Category: ~DO NOT USE (was: OCaml general)

Bug description

native code generation uses a barrier at 100000 for the generation of asm labels, at least on i386 and amd64 (haven't tried others). This only happens when using ocaml on very huge generated code, but there doesn't seem to be a good reason to enforce this limitation (except, perhaps, readability of the asm); besides, ocaml doesn't complain but generates invalid assembly code.

Additional information

here is a possible patch that replaces the barrier at 100000 to max_int/2 : it's not pretty but solves the issue alright

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commented Dec 18, 2011

Comment author: @xavierleroy

Tentative fix in SVN trunk, commit 11887. Tested only on AMD64/Linux so far.

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commented Dec 18, 2011

Comment author: meurer

Confirmed to work with ARM/Linux.

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commented Dec 18, 2011

Comment author: meyer

I bumped on it also just few days ago at work when compiling 200K of mechanically generated OCaml code, I'll validate it today and update the issue.

Thank you for fixing this!

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commented Dec 20, 2011

Comment author: meyer

Indeed, I tried with the project that stopped compiling and it works flawlessly.

Sorry to keep you waited.

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