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| author | Jason Merrill <jason@redhat.com> | 2019-06-25 12:15:40 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2019-06-25 12:15:40 -0400 |
| commit | a4cc28287993320b4550a8a1d3842172d41b8d1c (patch) | |
| tree | 5cab53c6ed870a1e647482ffeca76676911c19e1 /gcc | |
| parent | 27bb6f7c4775b6dc554811eec9597511e2d38973 (diff) | |
| download | gcc-a4cc28287993320b4550a8a1d3842172d41b8d1c.zip gcc-a4cc28287993320b4550a8a1d3842172d41b8d1c.tar.gz gcc-a4cc28287993320b4550a8a1d3842172d41b8d1c.tar.bz2 | |
class.c (resolves_to_fixed_type_p): Check CLASSTYPE_FINAL.
* class.c (resolves_to_fixed_type_p): Check CLASSTYPE_FINAL.
If we have a pointer to final class, we know the dynamic type of the object
must be that class, because it can't have any derived classes.
From-SVN: r272656
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/class.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/tree-ssa/final1.C | 8 |
3 files changed, 16 insertions, 2 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index a0f6166..dee69b8 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,7 @@ +2019-06-25 Jason Merrill <jason@redhat.com> + + * class.c (resolves_to_fixed_type_p): Check CLASSTYPE_FINAL. + 2019-06-25 Jakub Jelinek <jakub@redhat.com> PR c++/90969 diff --git a/gcc/cp/class.c b/gcc/cp/class.c index e0df9ef..a679e65 100644 --- a/gcc/cp/class.c +++ b/gcc/cp/class.c @@ -7477,10 +7477,12 @@ resolves_to_fixed_type_p (tree instance, int* nonnull) } fixed = fixed_type_or_null (instance, nonnull, &cdtorp); - if (fixed == NULL_TREE) - return 0; if (INDIRECT_TYPE_P (t)) t = TREE_TYPE (t); + if (CLASS_TYPE_P (t) && CLASSTYPE_FINAL (t)) + return 1; + if (fixed == NULL_TREE) + return 0; if (!same_type_ignoring_top_level_qualifiers_p (t, fixed)) return 0; return cdtorp ? -1 : 1; diff --git a/gcc/testsuite/g++.dg/tree-ssa/final1.C b/gcc/testsuite/g++.dg/tree-ssa/final1.C new file mode 100644 index 0000000..43407f0 --- /dev/null +++ b/gcc/testsuite/g++.dg/tree-ssa/final1.C @@ -0,0 +1,8 @@ +// { dg-do compile { target c++11 } } +// { dg-additional-options -fdump-tree-gimple } +// { dg-final { scan-tree-dump-not "vptr" gimple } } + +struct A { int i; }; +struct B final: public virtual A { int j; }; + +int f(B* b) { return b->i; } |