rename POPFOO() to CX_POPFOO()

Rename all the context-popping macros such as POPBLOCK and POPSUB, by
giving them a CX_ prefix. (Do TOPBLOCK too).

This is principally to  deliberately break any existing non-core use of
these non-API macros, as their behaviour has changed in this branch.
In particular, POPBLOCK(cx) no longer decrements the cxt stack pointer
nor sets cx; instead, cx is now expected to already point to the stack
frame which POPBLOCK should process.

At the same time, giving them a CX_ prefix makes it clearer that these
are all part of a family of macros that manipulate the context stack.

The PUSHFOO() macros will be renamed in a later commit.

1 files changed, 5 insertions, 3 deletions

diff --git a/scope.c b/scope.c
index 342e514d57..f425be5dd8 100644
--- a/scope.c
+++ b/scope.c
@@ -1233,9 +1233,11 @@ Perl_leave_scope(pTHX_ I32 base)
 		SV **svp;
 		assert (ARG1_PTR);
 		svp = AvARRAY((PAD*)ARG1_PTR) + (PADOFFSET)arg0.any_uv;
-		/* This mortalizing used to be done by POPLOOP() via itersave.
-		   But as we have all the information here, we can do it here,
-		   save even having to have itersave in the struct.  */
+                /* This mortalizing used to be done by CX_POOPLOOP() via
+                   itersave.  But as we have all the information here, we
+                   can do it here, save even having to have itersave in
+                   the struct.
+                   */
 		sv_2mortal(*svp);
 		*svp = ARG2_SV;
 	    }