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| author | Karl Williamson <khw@cpan.org> | 2021-03-20 16:55:10 -0600 |
|---|---|---|
| committer | Karl Williamson <khw@cpan.org> | 2021-03-20 17:09:17 -0600 |
| commit | 42209d0732b775a9574ab375503172fd7874348e (patch) | |
| tree | 79411437531daabe4597bca47ed865cd7596c9d6 | |
| parent | d98b8db7f7f9a699c6e258ddaa187563ab861ff9 (diff) | |
| download | perl-42209d0732b775a9574ab375503172fd7874348e.tar.gz | |
perldelta for DEBUG_PRE_STMTS, DEBUG_POST_STMTS
| -rw-r--r-- | pod/perldelta.pod | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 23556c909b..8f2611ed64 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -350,6 +350,17 @@ A set of cop_hints_exists_{pv,pvn,pvs,sv} functions was added, to support checki for the existence of keys in the hints hash of a specific cop without needing to create a mortal copy of said value. +=item * + +An aid has been added for using the C<DEBUG> macros when debugging XS or +C code. The comments in F<perl.h> describe C<DEBUG_PRE_STMTS> and +C<DEBUG_POST_STMTS>. which you can C<#define> to do things like save and +restore C<errno>, in case the C<DEBUG> calls are interfering with that, +or to display timestamps, or which thread it's coming from, or the +location of the call, or whatever. You can make a quick hack to help +you track something down without having to edit individual C<DEBUG> +calls. + =back |