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perlapi: Add detail to pad_findmy_pv entry #23723

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Merged
khwilliamson merged 1 commit into from
Sep 19, 2025
Merged

perlapi: Add detail to pad_findmy_pv entry #23723

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13 changes: 7 additions & 6 deletions pad.c
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Original file line number Diff line number Diff line change
Expand Up @@ -941,15 +941,15 @@ S_pad_check_dup(pTHX_ PADNAME *name, U32 flags, const HV *ourstash)
}
}


/*
=for apidoc pad_findmy_pv
=for apidoc_item pad_findmy_pvn
=for apidoc_item pad_findmy_pvs
=for apidoc_item pad_findmy_sv

Given the name of a lexical variable, including its leading sigil, find its
position in the currently-compiling pad.
Given the name of a lexical variable, including its leading sigil, these find
its position in the currently compiling pad, returning that offset, or
C<NOT_IN_PAD> if no such lexical is in scope.

If it is not in the current pad but appears in the pad of any lexically
enclosing scope, then a pseudo-entry for it is added in the current pad.
Expand All @@ -965,9 +965,10 @@ enclosed in double quotes.
In plain C<pad_findmy_pv>, the variable name is a C language NUL-terminated
string.

In C<pad_findmy_pvn>, C<namelen> gives the length of the variable name in bytes,
so it may contain embedded-NUL characters. The caller must make sure C<namepv>
contains at least C<namelen> bytes.
In C<pad_findmy_pvn>, C<namepv> points to the first byte of the name (which
better be its sigil), and an additional parameter, C<namelen>, specifies its
length in bytes. Hence, C<namepv> may contain embedded-NUL characters. The
caller must make sure C<namepv> contains at least C<namelen> bytes.

In C<pad_findmy_sv>, the variable name is taken from the SV parameter using
C<L</SvPVutf8>()>.
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