Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/c-c++-common/attr-may-alias-1.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/c-c++-common/attr-may-alias-1.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,26 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -Wall" } */ + +typedef int T __attribute__((may_alias)); + +extern T *p; +extern int *p; + +extern int *p2; +extern T *p2; + +void fn1 (T); +void fn1 (int); + +void fn2 (int); +void fn2 (T); + +/* Ensure that the composite types have may_alias. */ +void +f (long *i) +{ + *i = *(__typeof (*p) *) &p; + asm ("" : : "r" (*p)); + *i = *(__typeof (*p2) *) &p2; + asm ("" : : "r" (*p2)); +}