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| author | Jason Merrill <jason@redhat.com> | 2021-05-19 17:33:21 -0400 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2021-05-19 23:10:53 -0400 |
| commit | 75ab8b4829dec8c70470e8225c9add964f71ed74 (patch) | |
| tree | c2ac53dfd730fda91342526f474a3243cd98a09f /gcc | |
| parent | fe9a6614a16b5ea7f12141c50b6b7de984390ed8 (diff) | |
| download | gcc-75ab8b4829dec8c70470e8225c9add964f71ed74.zip gcc-75ab8b4829dec8c70470e8225c9add964f71ed74.tar.gz gcc-75ab8b4829dec8c70470e8225c9add964f71ed74.tar.bz2 | |
c++: _Complex template parameter [PR100634]
We were crashing because invalid_nontype_parm_type_p allowed _Complex
template parms, but convert_nontype_argument didn't know what to do for
them. Let's just disallow it, people can and should use std::complex
instead.
PR c++/100634
gcc/cp/ChangeLog:
* pt.c (invalid_nontype_parm_type_p): Return true for COMPLEX_TYPE.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/nontype-complex1.C: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/pt.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp2a/nontype-complex1.C | 8 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c index 32cd0b7..cbd2f3d 100644 --- a/gcc/cp/pt.c +++ b/gcc/cp/pt.c @@ -26563,6 +26563,8 @@ invalid_nontype_parm_type_p (tree type, tsubst_flags_t complain) else if (cxx_dialect >= cxx11 && TREE_CODE (type) == BOUND_TEMPLATE_TEMPLATE_PARM) return false; + else if (TREE_CODE (type) == COMPLEX_TYPE) + /* Fall through. */; else if (VOID_TYPE_P (type)) /* Fall through. */; else if (cxx_dialect >= cxx20) diff --git a/gcc/testsuite/g++.dg/cpp2a/nontype-complex1.C b/gcc/testsuite/g++.dg/cpp2a/nontype-complex1.C new file mode 100644 index 0000000..4de2168 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp2a/nontype-complex1.C @@ -0,0 +1,8 @@ +// PR c++/100634 +// { dg-do compile { target c++20 } } +// { dg-options "" } + +// We could support _Complex template arguments, but better I think to make +// people use a standard type instead. +template<_Complex int> struct ComplexInt {}; // { dg-error "not a valid type" } +using CI = ComplexInt<1 + 3i>; |