18 lines
845 B
C++
18 lines
845 B
C++
// RUN: %clang_cc1 -std=c++1y -fsyntax-only -verify %s -DMAX=1234 -fconstexpr-steps 1234
|
|
// RUN: %clang_cc1 -std=c++1y -fsyntax-only -verify %s -DMAX=10 -fconstexpr-steps 10
|
|
// RUN: %clang -std=c++1y -fsyntax-only -Xclang -verify %s -DMAX=12345 -fconstexpr-steps=12345
|
|
|
|
// This takes a total of n + 4 steps according to our current rules:
|
|
// - One for the compound-statement that is the function body
|
|
// - One for the 'for' statement
|
|
// - One for the 'int k = 0;' statement
|
|
// - One for each of the n evaluations of the compound-statement in the 'for' body
|
|
// - One for the 'return' statemnet
|
|
constexpr bool steps(int n) {
|
|
for (int k = 0; k != n; ++k) {}
|
|
return true; // expected-note {{step limit}}
|
|
}
|
|
|
|
static_assert(steps((MAX - 4)), ""); // ok
|
|
static_assert(steps((MAX - 3)), ""); // expected-error {{constant}} expected-note{{call}}
|