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author | Patrick Palka <ppalka@redhat.com> | 2022-07-13 14:02:08 -0400 |
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committer | Patrick Palka <ppalka@redhat.com> | 2022-07-13 14:02:08 -0400 |
commit | f70c18524221dcefa6cd26cee7b55503181bd912 (patch) | |
tree | 1690ad6b63b5c02a45054a0b423cdd42aed0c404 | |
parent | f07778f6f92111aa0abfd0f669b148a0bda537a9 (diff) | |
download | gcc-f70c18524221dcefa6cd26cee7b55503181bd912.zip gcc-f70c18524221dcefa6cd26cee7b55503181bd912.tar.gz gcc-f70c18524221dcefa6cd26cee7b55503181bd912.tar.bz2 |
c++: non-dependent call to consteval operator [PR105912]
Here we're crashing when substituting a non-dependent call to a
consteval operator, whose CALL_EXPR_OPERATOR_SYNTAX flag we try to
propagate to the result, but the result isn't a CALL_EXPR since the
selected function is consteval. This patch fixes this by checking the
result of extract_call_expr accordingly. (Note that we can't check
DECL_IMMEDIATE_FUNCTION_P here because we don't know which function was
selected by overload resolution from here.)
PR c++/105912
gcc/cp/ChangeLog:
* pt.cc (tsubst_copy_and_build) <case CALL_EXPR>: Guard against
NULL_TREE extract_call_expr result.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/consteval31.C: New test.
-rw-r--r-- | gcc/cp/pt.cc | 12 | ||||
-rw-r--r-- | gcc/testsuite/g++.dg/cpp2a/consteval31.C | 26 |
2 files changed, 32 insertions, 6 deletions
diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc index da00ce1..718dfa5 100644 --- a/gcc/cp/pt.cc +++ b/gcc/cp/pt.cc @@ -21206,12 +21206,12 @@ tsubst_copy_and_build (tree t, bool ord = CALL_EXPR_ORDERED_ARGS (t); bool rev = CALL_EXPR_REVERSE_ARGS (t); if (op || ord || rev) - { - function = extract_call_expr (ret); - CALL_EXPR_OPERATOR_SYNTAX (function) = op; - CALL_EXPR_ORDERED_ARGS (function) = ord; - CALL_EXPR_REVERSE_ARGS (function) = rev; - } + if (tree call = extract_call_expr (ret)) + { + CALL_EXPR_OPERATOR_SYNTAX (call) = op; + CALL_EXPR_ORDERED_ARGS (call) = ord; + CALL_EXPR_REVERSE_ARGS (call) = rev; + } } RETURN (ret); diff --git a/gcc/testsuite/g++.dg/cpp2a/consteval31.C b/gcc/testsuite/g++.dg/cpp2a/consteval31.C new file mode 100644 index 0000000..85a4d17 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp2a/consteval31.C @@ -0,0 +1,26 @@ +// PR c++/105912 +// { dg-do compile { target c++20 } } + +struct A { + consteval A operator+() { + return {}; + } +}; + +consteval A operator~(A) { + return {}; +} + +consteval A operator+(A, A) { + return {}; +} + +template<class> +void f() { + A a; + ~a; + a + a; + +a; +} + +template void f<int>(); |