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| author | Jason Merrill <jason@redhat.com> | 2022-05-20 13:32:10 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2022-05-24 15:52:03 -0400 |
| commit | 1189c03859cefef4fc4fd44d57eb3d4d3348b562 (patch) | |
| tree | 9edd7b5a787308e833080d55506efb3d18a86dc3 /gcc | |
| parent | 0aee03cb638c262846f55477b40828f694c846a0 (diff) | |
| download | gcc-1189c03859cefef4fc4fd44d57eb3d4d3348b562.zip gcc-1189c03859cefef4fc4fd44d57eb3d4d3348b562.tar.gz gcc-1189c03859cefef4fc4fd44d57eb3d4d3348b562.tar.bz2 | |
c++: *this folding in constexpr call
The code in cxx_eval_call_expression to fold *this was doing the wrong thing
for array decay; we can use cxx_fold_indirect_ref instead.
gcc/cp/ChangeLog:
* constexpr.cc (cxx_fold_indirect_ref): Add default arg.
(cxx_eval_call_expression): Call it.
(cxx_fold_indirect_ref_1): Handle null empty_base.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/constexpr.cc | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc index a015bc7..388239e 100644 --- a/gcc/cp/constexpr.cc +++ b/gcc/cp/constexpr.cc @@ -1354,6 +1354,8 @@ enum value_cat { static tree cxx_eval_constant_expression (const constexpr_ctx *, tree, value_cat, bool *, bool *, tree * = NULL); +static tree cxx_fold_indirect_ref (const constexpr_ctx *, location_t, tree, tree, + bool * = NULL); /* Attempt to evaluate T which represents a call to a builtin function. We assume here that all builtin functions evaluate to scalar types @@ -2720,9 +2722,7 @@ cxx_eval_call_expression (const constexpr_ctx *ctx, tree t, At this point it has already been evaluated in the call to cxx_bind_parameters_in_call. */ new_obj = TREE_VEC_ELT (new_call.bindings, 0); - STRIP_NOPS (new_obj); - if (TREE_CODE (new_obj) == ADDR_EXPR) - new_obj = TREE_OPERAND (new_obj, 0); + new_obj = cxx_fold_indirect_ref (ctx, loc, DECL_CONTEXT (fun), new_obj); if (ctx->call && ctx->call->fundef && DECL_CONSTRUCTOR_P (ctx->call->fundef->decl)) @@ -5197,7 +5197,8 @@ cxx_fold_indirect_ref_1 (const constexpr_ctx *ctx, location_t loc, tree type, && CLASS_TYPE_P (optype) && DERIVED_FROM_P (type, optype)) { - *empty_base = true; + if (empty_base) + *empty_base = true; return op; } } @@ -5216,7 +5217,7 @@ cxx_fold_indirect_ref_1 (const constexpr_ctx *ctx, location_t loc, tree type, static tree cxx_fold_indirect_ref (const constexpr_ctx *ctx, location_t loc, tree type, - tree op0, bool *empty_base) + tree op0, bool *empty_base /* = NULL*/) { tree sub = op0; tree subtype; |