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third_party
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llvm-project
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clang
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test
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SemaCXX
/
constexpr-ackermann.cpp
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// RUN: %clang_cc1 -std=c++11 -fsyntax-only %s
constexpr
unsigned
long
long
A
(
unsigned
long
long
m
,
unsigned
long
long
n
)
{
return
m
==
0
?
n
+
1
:
n
==
0
?
A
(
m
-
1
,
1
)
:
A
(
m
-
1
,
A
(
m
,
n
-
1
));
}
using
X
=
int
[
A
(
3
,
4
)];
using
X
=
int
[
125
];