diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr13146.C')
-rw-r--r-- | gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr13146.C | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr13146.C b/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr13146.C new file mode 100644 index 000000000..22baf03d3 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/g++.dg/tree-ssa/pr13146.C @@ -0,0 +1,77 @@ +/* { dg-do link } */ +/* { dg-options "-O -fstrict-aliasing" } */ + +class first +{ +public: + double d; + int f1; +}; + +class middle : public first +{ +}; + +class second : public middle +{ +public: + int f2; + short a; +}; + +class third +{ +public: + char a; + char b; +}; + +class multi: public third, public second +{ +public: + short s; + /* The following field used to be of type char but that causes + class multi to effectively get alias-set zero which we end + up not optimizing because of the fix for PR44164. */ + int f3; +}; + +extern void link_error (); + +void +foo (first *s1, second *s2) +{ + s1->f1 = 0; + s2->f2 = 0; + s1->f1++; + s2->f2++; + s1->f1++; + s2->f2++; + if (s1->f1 != 2) + link_error (); +} + +void +bar (first *s1, multi *s3) +{ + s1->f1 = 0; + s3->f3 = 0; + s1->f1++; + s3->f3++; + s1->f1++; + s3->f3++; + if (s1->f1 != 2) + link_error (); +} + + +int +main() +{ + first a; + second b; + multi c; + foo (&a, &b); + bar (&a, &c); + return 0; +} |