Before: int a
ent: 42
Around: int a
ent: 42
Around (inner): int a
ent (inner): 42
res (inner): 42
tmp: 42
After: int a
res: 42
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23

REF (explitcit):

A:
Before: int a
ent: 42
Around: int a
ent: 42
Around (inner): int a
ent (inner): 42
res (inner): 42
tmp: 42
After: int a
res: 42

X1:
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23

X2:
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23

X3:
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23

M1:
ent ( via member() ): 5
Before: int T1::m
ent: 5
Around: int T1::m
ent: 5
Around (inner): int T1::m
ent (inner): 5
res (inner): 5
tmp: 5
After: int T1::m
res: 5

M2:
ent ( via member() ): 5
Before: int T1::m
ent: 5
Around: int T1::m
ent: 5
Around (inner): int T1::m
ent (inner): 5
res (inner): 5
tmp: 5
After: int T1::m
res: 5

P1:
ent ( via member() ): 13
Before: int T1::p
ent: 13
Around: int T1::p
ent: 13
Around (inner): int T1::p
ent (inner): 13
res (inner): 13
tmp: 13
After: int T1::p
res: 13

REF (implicit):

local ref:
Before: int a
ent: 42
Around: int a
ent: 42
Around (inner): int a
ent (inner): 42
res (inner): 42
tmp: 42
After: int a
res: 42

param ref:
Before: int a
ent: 42
Around: int a
ent: 42
Around (inner): int a
ent (inner): 42
res (inner): 42
tmp: 42
After: int a
res: 42
1: 42

default param ref (no default):
Before: int a
ent: 42
Around: int a
ent: 42
Around (inner): int a
ent (inner): 42
res (inner): 42
tmp: 42
After: int a
res: 42
2: 42

default param ref (default):
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23
2: 23

return ref:
Before: int T1::x
ent: 23
Around: int T1::x
ent: 23
Around (inner): int T1::x
ent (inner): 23
res (inner): 23
tmp: 23
After: int T1::x
res: 23
23