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P0732R2 / C++ 2a introduce class literals as template parameters. The front-end uses VAR_DECLs constructed from such literals to bind the template PARM_DECLs, but dwarf2out.c used to reject such VAR_DECLs. Taking DECL_INITIAL from such VAR_DECLs enables the generation of DW_AT_const_value for them, at least when the class literal can actually be represented as such. for gcc/ChangeLog PR c++/88534 PR c++/88537 * dwarf2out.c (generic_parameter_die): Follow DECL_INITIAL of VAR_DECL args. for gcc/testsuite/ChangeLog PR c++/88534 PR c++/88537 * g++.dg/cpp2a/pr88534.C: New. * g++.dg/cpp2a/pr88537.C: New. From-SVN: r269709
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