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Added sol #17

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4 changes: 4 additions & 0 deletions compiler/src/dmd/templatesem.d
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Original file line number Diff line number Diff line change
Expand Up @@ -973,6 +973,10 @@ extern (D) MATCHpair deduceFunctionTemplateMatch(TemplateDeclaration td, Templat
}
if (fname && !foundName)
{
// This is where we need to handle the error case when a named argument
// doesn't match any parameter name in a templated function
// Similar to the error generated in mtype.d's resolveNamedArgs
error(instLoc, "no parameter named `%s`", fname.toChars());
argi = DEFAULT_ARGI;
}

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15 changes: 15 additions & 0 deletions compiler/test/fail_compilation/template_named_args_test.d
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Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
/*
TEST_OUTPUT:
---
fail_compilation/template_named_args_test.d(14): Error: no parameter named `x`
fail_compilation/template_named_args_test.d(14): Error: template `gun` is not callable using argument types `!()(int)`
fail_compilation/template_named_args_test.d(10): Candidate is: `gun(T)(T a)`
---
*/

void gun(T)(T a) {}

void main()
{
gun(x: 1); // (no explanation)
}
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