9f143008c7
The testcase hit an ICE trying to expand a TARGET_EXPR temporary cached from the other lambda-expression. This patch fixes this in two ways: 1) Avoid reusing a TARGET_EXPR from another function. 2) Avoid ending up with a TARGET_EXPR at all; the use of 'p' had become <TARGET_EXPR<NON_LVALUE_EXPR<TARGET_EXPR ...>>>, which doesn't make any sense. gcc/cp/ChangeLog 2020-04-04 Jason Merrill <jason@redhat.com> PR c++/94453 * constexpr.c (maybe_constant_value): Use break_out_target_exprs. * expr.c (mark_use) [VIEW_CONVERT_EXPR]: Don't wrap a TARGET_EXPR in NON_LVALUE_EXPR.
29 lines
508 B
C
29 lines
508 B
C
// PR c++/94453
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// { dg-do compile { target c++11 } }
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void *ay();
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template <typename f> f ay() { return *static_cast<f *>(ay()); }
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template <typename h>
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void bf() {
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ay<h>()();
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}
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struct az {
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template <typename h>
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az(h);
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using bk = void (*)();
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bk bl;
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};
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template <typename h>
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az::az(h) { bl = bf<h>; }
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struct A {};
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void da(az);
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void di(A, int);
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void dk(A, az, az);
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void b() {
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int data = 0;
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auto n = [] {};
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constexpr auto p = A{};
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auto q = [=] { di(p, data); };
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da([=] { dk(p, n, q); });
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}
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