https://issues.dlang.org/show_bug.cgi?id=23056

          Issue ID: 23056
           Summary: importC: dmd asserts for missing return statement in
                    CTFE function
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Keywords: CTFE, ImportC
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: duser@neet.fi
                CC: duser@neet.fi

affects C files only, maybe they have some error turned off

int test(void){}
_Static_assert(test(), "");

core.exception.AssertError@src/dmd/dinterpret.d(698): Assertion failure
----------------
??:? _d_assertp [0x90fba1]
src/dmd/dinterpret.d:698 dmd.expression.Expression
dmd.dinterpret.interpretFunction(dmd.expression.UnionExp*,
dmd.func.FuncDeclaration, dmd.dinterpret.InterState*,
dmd.root.array.Array!(dmd.expression.Expression).Array*,
dmd.expression.Expression) [0x66160e]
src/dmd/dinterpret.d:4922 _ZN11Interpreter5visitEP7CallExp [0x66da82]
src/dmd/expression.d:5152 _ZN7CallExp6acceptEP7Visitor [0x6de081]
src/dmd/dinterpret.d:6380 dmd.expression.Expression
dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.expression.Expression,
dmd.dinterpret.InterState*, dmd.dinterpret.CTFEGoal) [0x6725bc]
src/dmd/dinterpret.d:6390 dmd.expression.Expression
dmd.dinterpret.interpret(dmd.expression.Expression, dmd.dinterpret.InterState*,
dmd.dinterpret.CTFEGoal) [0x672615]
src/dmd/dinterpret.d:100 dmd.expression.Expression
dmd.dinterpret.ctfeInterpret(dmd.expression.Expression) [0x65f482]
src/dmd/expression.d:1602 _ZN10Expression13ctfeInterpretEv [0x6d5998]
src/dmd/staticcond.d:109 bool
dmd.staticcond.evalStaticCondition(dmd.dscope.Scope*,
dmd.expression.Expression, dmd.expression.Expression, out bool,
dmd.root.array.Array!(dmd.expression.Expression).Array*).impl(dmd.expression.Expression)
[0x79a694]
src/dmd/staticcond.d:123 bool
dmd.staticcond.evalStaticCondition(dmd.dscope.Scope*,
dmd.expression.Expression, dmd.expression.Expression, out bool,
dmd.root.array.Array!(dmd.expression.Expression).Array*) [0x79a443]
src/dmd/semantic2.d:103 _ZN16Semantic2Visitor5visitEP12StaticAssert [0x77d139]
src/dmd/staticassert.d:69 _ZN12StaticAssert6acceptEP7Visitor [0x79a3f6]
src/dmd/semantic2.d:79 _Z9semantic2P7DsymbolP5Scope [0x77d069]
src/dmd/semantic2.d:525 _ZN16Semantic2Visitor5visitEP17AttribDeclaration
[0x77e21a]
src/dmd/parsetimevisitor.d:71
_ZN16ParseTimeVisitorI10ASTCodegenE5visitEP15LinkDeclaration [0x779c9e]
src/dmd/attrib.d:433 _ZN15LinkDeclaration6acceptEP7Visitor [0x61ed99]
src/dmd/semantic2.d:79 _Z9semantic2P7DsymbolP5Scope [0x77d069]
src/dmd/semantic2.d:339 _ZN16Semantic2Visitor5visitEP6Module [0x77db3e]
src/dmd/dmodule.d:1452 _ZN6Module6acceptEP7Visitor [0x67d239]
src/dmd/semantic2.d:79 _Z9semantic2P7DsymbolP5Scope [0x77d069]
src/dmd/mars.d:460 int dmd.mars.tryMain(ulong, const(char)**, ref
dmd.globals.Param) [0x607e78]
src/dmd/mars.d:958 _Dmain [0x609abd]

line numbers at commit 035a9efa1c404c90e5c0140f939cb02d02f1cc15

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