Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/g++.dg/warn/Wreturn-local-addr-6.C @ 145:1830386684a0
gcc-9.2.0
| author | anatofuz |
|---|---|
| date | Thu, 13 Feb 2020 11:34:05 +0900 |
| parents | |
| children |
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| 131:84e7813d76e9 | 145:1830386684a0 |
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| 1 /* PR c/90737 - inconsistent address of a local converted to intptr_t | |
| 2 between callee and caller | |
| 3 { dg-do compile } | |
| 4 { dg-options "-O1 -Wall -Wreturn-local-addr -fdump-tree-optimized" } */ | |
| 5 | |
| 6 typedef __INTPTR_TYPE__ intptr_t; | |
| 7 | |
| 8 const intptr_t& | |
| 9 return_addr_label_as_intref (void) | |
| 10 { | |
| 11 label: | |
| 12 if ((const intptr_t*)&&label == 0) | |
| 13 __builtin_exit (1); | |
| 14 | |
| 15 return *(const intptr_t*)&&label; // { dg-warning "\\\[-Wreturn-local-addr]" } */ | |
| 16 } | |
| 17 | |
| 18 const intptr_t& | |
| 19 return_addr_local_as_intref (void) | |
| 20 { | |
| 21 int a[1]; | |
| 22 if ((const intptr_t*)a == 0) | |
| 23 __builtin_exit (1); | |
| 24 | |
| 25 return (const intptr_t&)a; // { dg-warning "\\\[-Wreturn-local-addr]" } */ | |
| 26 } | |
| 27 | |
| 28 /* Verify that the return value has been replaced with zero: | |
| 29 { dg-final { scan-tree-dump-times "return 0;" 2 "optimized" } } */ |