effcb4181e
Here we're ICE'ing in do_narrow during error-recovery, because ocp_convert returns error_mark_node after it attempts to reduce a const decl to its erroneous DECL_INITIAL via scalar_constant_value, and we later pass this error_mark_node to fold_build2 which isn't prepared to handle error_mark_nodes. We could fix this ICE in do_narrow by checking if ocp_convert returns error_mark_node, but for the sake of consistency and for better error recovery it seems it'd be preferable if ocp_convert didn't care that a const decl's initializer is erroneous and would instead proceed as if the decl was not const, which is the approach that this patch takes. gcc/cp/ChangeLog: PR c++/94475 * cvt.c (ocp_convert): If the result of scalar_constant_value is erroneous, ignore it and use the original expression. gcc/testsuite/ChangeLog: PR c++/94475 * g++.dg/conversion/err-recover2.C: New test. * g++.dg/diagnostic/pr84138.C: Remove now-bogus warning. * g++.dg/warn/Wsign-compare-8.C: Remove now-bogus warning. |
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