Blame SOURCES/gcc48-pr79969.patch
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2017-03-09 Jakub Jelinek <jakub@redhat.com>
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PR c/79969
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* c-decl.c (start_enum): Adjust DECL_SOURCE_LOCATION of
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TYPE_STUB_DECL.
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* gcc.dg/debug/dwarf2/enum-loc1.c: New test.
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--- gcc/c/c-decl.c.jj 2017-03-05 22:39:45.000000000 +0100
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+++ gcc/c/c-decl.c 2017-03-09 08:19:33.100042166 +0100
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@@ -8201,6 +8201,10 @@ start_enum (location_t loc, struct c_enu
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enumtype = make_node (ENUMERAL_TYPE);
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pushtag (loc, name, enumtype);
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}
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+ /* Update type location to the one of the definition, instead of e.g.
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+ a forward declaration. */
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+ else if (TYPE_STUB_DECL (enumtype))
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+ DECL_SOURCE_LOCATION (TYPE_STUB_DECL (enumtype)) = loc;
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if (C_TYPE_BEING_DEFINED (enumtype))
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error_at (loc, "nested redefinition of %<enum %E%>", name);
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--- gcc/testsuite/gcc.dg/debug/dwarf2/enum-loc1.c.jj 2017-03-09 08:09:30.742037844 +0100
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+++ gcc/testsuite/gcc.dg/debug/dwarf2/enum-loc1.c 2017-03-09 08:16:45.202268438 +0100
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@@ -0,0 +1,19 @@
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+/* PR c/79969 */
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+/* { dg-do compile } */
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+/* { dg-options "-gdwarf-2 -dA -fno-merge-debug-strings" } */
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+
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+enum ENUMTAG;
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+
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+enum ENUMTAG
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+{
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+ B = 1,
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+ C = 2
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+};
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+
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+void
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+bar (void)
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+{
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+ enum ENUMTAG a = C;
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+}
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+
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+/* { dg-final { scan-assembler "DW_TAG_enumeration_type\[^\\r\\n\]*\[\\r\\n\]+\[^\\r\\n\]*\"ENUMTAG\[^\\r\\n\]*DW_AT_name(\[^\\r\\n\]*\[\\r\\n\]+\[^\\r\\n\]*DW_AT_)*\[^\\r\\n\]*\[\\r\\n\]+\[^\\r\\n\]*\[^0-9a-fA-FxX](0x)?7\[^0-9a-fA-FxX]\[^\\r\\n\]*DW_AT_decl_line" } } */
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