/* TEST_OUTPUT: --- fail_compilation/fail12744.d(38): Error: incompatible parameter storage classes `ref` and `out` fail_compilation/fail12744.d(52): Error: template instance `fail12744.bar12744R!(foo12744O)` error instantiating fail_compilation/fail12744.d(38): Error: incompatible parameter storage classes `ref` and `lazy` fail_compilation/fail12744.d(53): Error: template instance `fail12744.bar12744R!(foo12744L)` error instantiating fail_compilation/fail12744.d(39): Error: incompatible parameter storage classes `out` and `ref` fail_compilation/fail12744.d(56): Error: template instance `fail12744.bar12744O!(foo12744R)` error instantiating fail_compilation/fail12744.d(39): Error: incompatible parameter storage classes `out` and `lazy` fail_compilation/fail12744.d(58): Error: template instance `fail12744.bar12744O!(foo12744L)` error instantiating fail_compilation/fail12744.d(40): Error: incompatible parameter storage classes `lazy` and `ref` fail_compilation/fail12744.d(61): Error: template instance `fail12744.bar12744L!(foo12744R)` error instantiating fail_compilation/fail12744.d(40): Error: incompatible parameter storage classes `lazy` and `out` fail_compilation/fail12744.d(62): Error: template instance `fail12744.bar12744L!(foo12744O)` error instantiating fail_compilation/fail12744.d(41): Error: incompatible parameter storage classes `auto ref` and `out` fail_compilation/fail12744.d(67): Error: none of the overloads of template `fail12744.bar12744A` are callable using argument types `!(foo12744O)(int)` fail_compilation/fail12744.d(41): Candidate is: `bar12744A(alias f)(auto ref PTT12744!f args)` fail_compilation/fail12744.d(41): Error: incompatible parameter storage classes `auto ref` and `lazy` fail_compilation/fail12744.d(68): Error: none of the overloads of template `fail12744.bar12744A` are callable using argument types `!(foo12744L)(int)` fail_compilation/fail12744.d(41): Candidate is: `bar12744A(alias f)(auto ref PTT12744!f args)` --- */ template PTT12744(func...) { static if (is(typeof(func[0]) P == function)) alias PTT12744 = P; else static assert(0); } void foo12744N( int x) {} void foo12744R( ref int x) {} void foo12744O( out int x) {} void foo12744L(lazy int x) {} void bar12744N(alias f)( PTT12744!f args) {} void bar12744R(alias f)( ref PTT12744!f args) {} void bar12744O(alias f)( out PTT12744!f args) {} void bar12744L(alias f)( lazy PTT12744!f args) {} void bar12744A(alias f)(auto ref PTT12744!f args) {} void main() { alias bNN = bar12744N!foo12744N; alias bNR = bar12744N!foo12744R; alias bNO = bar12744N!foo12744O; alias bNL = bar12744N!foo12744L; alias bRN = bar12744R!foo12744N; alias bRR = bar12744R!foo12744R; alias bRO = bar12744R!foo12744O; // error alias bRL = bar12744R!foo12744L; // error alias bON = bar12744O!foo12744N; alias bOR = bar12744O!foo12744R; // error alias bOO = bar12744O!foo12744O; alias bOL = bar12744O!foo12744L; // error alias bLN = bar12744L!foo12744N; alias bLR = bar12744L!foo12744R; // error alias bLO = bar12744L!foo12744O; // error alias bLL = bar12744L!foo12744L; bar12744A!foo12744N(1); bar12744A!foo12744R(1); bar12744A!foo12744O(1); // error bar12744A!foo12744L(1); // error }