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annotate gcc/testsuite/g++.dg/coroutines/torture/local-var-4.C @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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145
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1 // { dg-do run }
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2
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3 // Test modifying a local var across nested scopes containing vars
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4 // hiding those at outer scopes.
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5
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6 #include "../coro.h"
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7
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8 // boiler-plate for tests of codegen
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9 #include "../coro1-ret-int-yield-int.h"
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10
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11 struct coro1
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12 f (int start) noexcept
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13 {
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14 int value = start;
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15 {
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16 int value = start + 5;
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17 {
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18 int value = start + 20;
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19 }
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20 {
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21 int value = start + 1;
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22 PRINT ("f: about to yield start");
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23 co_yield value;
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24 }
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25 }
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26
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27 value -= 31;
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28 PRINT ("f: about to yield (value-31)");
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29 co_yield value;
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30
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31 value += 6163;
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32 PRINT ("f: about to return (value+6163)");
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33 co_return value;
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34 }
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35
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36 int main ()
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37 {
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38 PRINT ("main: create coro1");
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39 struct coro1 x = f (42);
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40 PRINT ("main: got coro1 - resuming (1)");
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41 if (x.handle.done())
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42 abort();
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43 x.handle.resume();
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44 PRINT ("main: after resume (1)");
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45 int y = x.handle.promise().get_value();
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46 if ( y != 43 )
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47 abort ();
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48 PRINT ("main: apparently got 42 - resuming (2)");
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49 if (x.handle.done())
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50 abort();
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51 x.handle.resume();
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52 PRINT ("main: after resume (2)");
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53 y = x.handle.promise().get_value();
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54 if ( y != 11 )
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55 abort ();
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56 PRINT ("main: apparently got 11 - resuming (3)");
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57 if (x.handle.done())
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58 {
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59 PRINT ("main: done?");
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60 abort();
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61 }
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62 x.handle.resume();
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63 PRINT ("main: after resume (2) checking return");
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64 y = x.handle.promise().get_value();
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65 if ( y != 6174 )
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66 abort ();
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67 PRINT ("main: apparently got 6174");
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68 if (!x.handle.done())
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69 {
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70 PRINT ("main: apparently not done...");
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71 abort ();
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72 }
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73 PRINT ("main: returning");
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74 return 0;
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75 }