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152
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1 // { dg-do run }
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2
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3 // Test co-await in while condition.
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4
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5 #include "../coro.h"
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6
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7 // boiler-plate for tests of codegen
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8 #include "../coro1-ret-int-yield-int.h"
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9
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10 /* An awaiter that suspends always and returns a boolean as the
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11 await_resume output. */
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12 struct BoolAwaiter {
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13 bool v;
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14 BoolAwaiter (bool _v) : v(_v) {}
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15 bool await_ready () { return false; }
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16 void await_suspend (coro::coroutine_handle<>) {}
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17 bool await_resume () { return v; }
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18 };
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19
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20 //extern bool tt(void);
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21 int three = 3;
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22 struct coro1
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23 my_coro (bool t)
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24 {
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25 //int three = 3;
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26 while (co_await BoolAwaiter (t) && t)
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27 {
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28 int five = three + 2;
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29 co_yield 6169 + five;
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30 }
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31
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32 co_return 42;
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33 }
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34
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35 int main ()
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36 {
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37 PRINT ("main: create coro");
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38 struct coro1 x = my_coro (false);
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39
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40 if (x.handle.done())
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41 {
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42 PRINT ("main: apparently done when we shouldn't be...");
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43 abort ();
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44 }
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45
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46 PRINT ("main: resume initial suspend");
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47 x.handle.resume();
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48
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49 // will be false - so no yield expected.
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50 PRINT ("main: while condition");
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51 x.handle.resume();
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52
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53 int y = x.handle.promise().get_value();
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54 if ( y != 42 )
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55 {
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56 PRINTF ("main: apparently wrong value : %d\n", y);
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57 abort ();
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58 }
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59
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60 if (!x.handle.done())
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61 {
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62 PRINT ("main: apparently not done...");
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63 abort ();
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64 }
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65
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66 PRINT ("main: returning");
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67 return 0;
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68 }
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