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152
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1 // { dg-do run }
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2
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3 // Test modifying a local var and yielding several instances of it.
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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 struct coro1
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11 f (int start) noexcept
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12 {
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13 int value = start;
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14 PRINT ("f: about to yield start");
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15 co_yield start;
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16
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17 value -= 31;
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18 PRINT ("f: about to yield (value-31)");
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19 co_yield value;
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20
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21 value += 6163;
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22 PRINT ("f: about to return (value+6163)");
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23 co_return value;
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24 }
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25
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26 int main ()
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27 {
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28 PRINT ("main: create coro1");
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29 struct coro1 x = f (42);
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30 PRINT ("main: got coro1 - resuming (1)");
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31 if (x.handle.done())
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32 abort();
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33 x.handle.resume();
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34 PRINT ("main: after resume (1)");
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35 int y = x.handle.promise().get_value();
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36 if ( y != 42 )
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37 abort ();
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38 PRINT ("main: apparently got 42 - resuming (2)");
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39 if (x.handle.done())
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40 abort();
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41 x.handle.resume();
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42 PRINT ("main: after resume (2)");
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43 y = x.handle.promise().get_value();
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44 if ( y != 11 )
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45 abort ();
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46 PRINT ("main: apparently got 11 - resuming (3)");
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47 if (x.handle.done())
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48 {
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49 PRINT ("main: done?");
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50 abort();
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51 }
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52 x.handle.resume();
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53 PRINT ("main: after resume (2) checking return");
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54 y = x.handle.promise().get_value();
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55 if ( y != 6174 )
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56 abort ();
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57 PRINT ("main: apparently got 6174");
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58 if (!x.handle.done())
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59 {
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60 PRINT ("main: apparently not done...");
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61 abort ();
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62 }
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63 PRINT ("main: returning");
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64 return 0;
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65 }
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