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home:dirkmueller:acdc:sp5-rebuild
cross-aarch64-gcc7.21370
gcc7-pr93888.patch
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File gcc7-pr93888.patch of Package cross-aarch64-gcc7.21370
commit 64ba6d17022eeb65f56f0b141c2640f9ab938f97 Author: Jakub Jelinek <jakub@redhat.com> Date: Wed Mar 4 12:59:04 2020 +0100 inliner: Copy DECL_BY_REFERENCE in copy_decl_to_var [PR93888] In the following testcase we emit wrong debug info for the karg parameter in the DW_TAG_inlined_subroutine into main. The problem is that the karg PARM_DECL is DECL_BY_REFERENCE and thus in the IL has const K & type, but in the source just const K. When the function is inlined, we create a VAR_DECL for it, but don't set DECL_BY_REFERENCE, so when emitting DW_AT_location, we treat it like a const K & typed variable, but it has DW_AT_abstract_origin which has just the const K type and thus the debugger thinks the variable has const K type. Fixed by copying the DECL_BY_REFERENCE flag. Not doing it in copy_decl_for_dup_finish, because copy_decl_no_change already copies that flag through copy_node and in copy_result_decl_to_var it is undesirable, as we handle DECL_BY_REFERENCE in that case instead by changing the type. 2020-03-04 Jakub Jelinek <jakub@redhat.com> PR debug/93888 * tree-inline.c (copy_decl_to_var): Copy DECL_BY_REFERENCE flag. * g++.dg/guality/pr93888.C: New test. diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c index 23941dade55..59798ec0454 100644 --- a/gcc/tree-inline.c +++ b/gcc/tree-inline.c @@ -5929,6 +5929,7 @@ copy_decl_to_var (tree decl, copy_body_data *id) TREE_READONLY (copy) = TREE_READONLY (decl); TREE_THIS_VOLATILE (copy) = TREE_THIS_VOLATILE (decl); DECL_GIMPLE_REG_P (copy) = DECL_GIMPLE_REG_P (decl); + DECL_BY_REFERENCE (copy) = DECL_BY_REFERENCE (decl); return copy_decl_for_dup_finish (id, decl, copy); }
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