Bug 16239 – is(typeof(foo)) hides deprecation message about foo

Spin-off from issue 16238. ---- void main() { startsWith!funTemplate(); } enum e = is(typeof(funTemplate())); void startsWith(alias pred)() { pred(); } void funTemplate()() { fun(); } deprecated void fun() {} ---- dmd does not print a deprecation message about fun here. If the e line is removed, the message gets printed. When compiling with -de, the deprecation message becomes visible and compilation fails.

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