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| author | Nicholas Clark <nick@ccl4.org> | 2005-01-05 20:14:02 +0000 |
|---|---|---|
| committer | Nicholas Clark <nick@ccl4.org> | 2005-01-05 20:14:02 +0000 |
| commit | 6168cf9995a8bfcfe4ab9350ebc7de70215ae9af (patch) | |
| tree | 1d5261855a486768f66efa8f31ba3eadd424c1b9 /pod/perltodo.pod | |
| parent | e6827a76d6739cf7ead59ff0f2fbe7afeb7086ed (diff) | |
| download | perl-6168cf9995a8bfcfe4ab9350ebc7de70215ae9af.tar.gz | |
Error-free constant folding is a TODO
p4raw-id: //depot/perl@23754
Diffstat (limited to 'pod/perltodo.pod')
| -rw-r--r-- | pod/perltodo.pod | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pod/perltodo.pod b/pod/perltodo.pod index e44f242a5c..5479568bf0 100644 --- a/pod/perltodo.pod +++ b/pod/perltodo.pod @@ -184,6 +184,13 @@ Clean these up. Move them to mathom.c, and don't compile for blead? The old perltodo notes "This has been done in places, but needs a thorough code review. Also fchdir is available in some platforms." +=head2 Constant folding + +The peephole optimiser should trap errors during constant folding, and give +up on the folding, rather than bailing out at compile time. It is quite +possible that the unfoldable constant is in unreachable code, eg something +akin to C<$a = 0/0 if 0;> + =head1 Tests =head2 Make Schwern poorer |