66de517b1c
In this PR, we're crashing because the constraint handling inside do_auto_deduction doesn't expect to see an adc_decomp_type context. This patch fixes this by treating adc_decomp_type like adc_variable_type or adc_return_type during placeholder type constraint checking. Meanwhile, I noticed we weren't checking constraints at all when binding an array via a structured binding, since do_auto_deduction would exit early and bypass the constraint check. This patch fixes this by replacing the early exit with an appropriate setup of the 'targs' vector. gcc/cp/ChangeLog: PR c++/99899 * pt.c (do_auto_deduction): Don't exit early when deducing the array type of a structured binding. Also handle adc_decomp_type during constraint checking. gcc/testsuite/ChangeLog: PR c++/99899 * g++.dg/cpp2a/concepts-placeholder7.C: New test. * g++.dg/cpp2a/concepts-placeholder8.C: New test. |
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