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If the only reference in a source file is to a static method of a class, then GCC would output debug information for the class name but not any of its members or base classes. The attached patch fixes this by having "prune_unused_types_mark" mark all of the parent's children if the parent DIE type is for a class. The associated new testcase verifies this, and also verifies this that references to a function in a namespace do *not* cause other parts of that namespace to be emitted as debug information, but that references to a method in a class (or struct or union) do emit the other information for that class. Checked by "make check" on dwarf2.exp. Ok to commit? This would close PR/54508. paul ChangeLog: 2012-09-17 Paul Koning <n...@arrl.net> * dwarf2out.c (prune_unused_types_mark): Mark all of parent's children if parent is a class. testsuite/ChangeLog: 2012-09-17 Paul Koning <n...@arrl.net> * g++.dg/debug/dwarf2/pr54508.C: New. Index: gcc/dwarf2out.c =================================================================== --- gcc/dwarf2out.c (revision 191408) +++ gcc/dwarf2out.c (working copy) @@ -21033,9 +21033,13 @@ prune_unused_types_mark_generic_parms_dies (die); /* We also have to mark its parents as used. - (But we don't want to mark our parents' kids due to this.) */ + (But we don't want to mark our parent's kids due to this, + unless it is a class.) */ if (die->die_parent) - prune_unused_types_mark (die->die_parent, 0); + prune_unused_types_mark (die->die_parent, + (die->die_parent->die_tag == DW_TAG_class_type || + die->die_parent->die_tag == DW_TAG_structure_type || + die->die_parent->die_tag == DW_TAG_union_type)); /* Mark any referenced nodes. */ prune_unused_types_walk_attribs (die); Index: testsuite/g++.dg/debug/dwarf2/pr54508.C =================================================================== --- testsuite/g++.dg/debug/dwarf2/pr54508.C (revision 0) +++ testsuite/g++.dg/debug/dwarf2/pr54508.C (revision 0) @@ -0,0 +1,67 @@ +// PR debug/54508 +// { dg-do compile } +// { dg-options "-g2 -dA" } + +// { dg-final { scan-assembler "\"cbase\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name\|DW_AT_name: \"cbase\"" } } +// { dg-final { scan-assembler "\"OPCODE\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name\|DW_AT_name: \"OPCODE\"" } } +// { dg-final { scan-assembler "\"bi\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name" } } +// { dg-final { scan-assembler "\"si\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name" } } +// { dg-final { scan-assembler "\"f1\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name" } } +// { dg-final { scan-assembler "\"f2\\\\0\"\[ \t\]+\[#;/!|@\]+ DW_AT_name" } } +// { dg-final { scan-assembler-not "\"nc\\\\0\"\[ \t\]+\# DW_AT_name\|DW_AT_name: \"nc\"" } } + +class cbase + +{ +public: + static int si; + int bi; +}; + +class c : public cbase + +{ +public: + enum + { + OPCODE = 251 + }; + int i ; + static const char *testc (void) { return "foo"; } +}; + +struct s +{ + int f1; + static const char *tests (void) { return "test"; } +}; + +union u +{ + int f2; + double d; + static const char *testu (void) { return "test union"; } +}; + +namespace n +{ + const char *ntest (void) { return "test n"; } + + class nc + { + public: + int i; + static int sj; + }; +} + +extern void send (int, int, const void *, int); + +void test (int src) +{ + int cookie = 1; + send(src, c::OPCODE, c::testc (), cookie); + send(src, c::OPCODE, s::tests (), cookie); + send(src, c::OPCODE, u::testu (), cookie); + send(src, c::OPCODE, n::ntest (), cookie); +}