[Lldb-commits] [lldb] [lldb][DWARF] Delay struct/class/union definition DIE searching when parsing declaration DIEs. (PR #90663)

[David Blaikie via lldb-commits]

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@@ -0,0 +1,40 @@
+# Test definition DIE searching is delayed until complete type is required.
+
+# RUN: split-file %s %t
+# RUN: %clangxx_host %t/main.cpp %t/t1_def.cpp -g -gsimple-template-names -o %t.out
+# RUN: %lldb -b %t.out -s %t/lldb.cmd | FileCheck %s
+
+# CHECK:      (lldb) p v1
+# CHECK: DWARFASTParserClang::ParseTypeFromDWARF{{.*}}DW_TAG_structure_type (DW_TAG_structure_type) name = 't2'
+# CHECK: DWARFASTParserClang::ParseTypeFromDWARF{{.*}}DW_TAG_structure_type (DW_TAG_structure_type) name = 't1'
+# CHECK: DWARFASTParserClang::ParseTypeFromDWARF{{.*}}DW_TAG_base_type (DW_TAG_base_type) name = 'int'
+# CHECK: DW_TAG_structure_type (DW_TAG_structure_type) 't2' resolving forward declaration...
+# CHECK: (t2<t1<int> >)  {}
+# CHECK: (lldb) p v2
+# CHECK: DWARFASTParserClang::ParseTypeFromDWARF{{.*}}DW_TAG_structure_type (DW_TAG_structure_type) name = 't1'
+# CHECK: DWARFASTParserClang::ParseTypeFromDWARF{{.*}}DW_TAG_base_type (DW_TAG_base_type) name = 'int'
+# CHECK: DW_TAG_structure_type (DW_TAG_structure_type) 't1' resolving forward declaration...
+# CHECK: (t1<int>)  {}
+
+#--- lldb.cmd
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dwblaikie wrote:

Might be better to test this without `-gsimple-template-names`, because it's a more generally valuable feature than that?

Oh, but that "look for the child count through a pointer" issue comes up and it's hard to reach this situation without `-gsimple-template-names`? (Maybe indirectly - if you print a struct with a pointer - perhaps that doesn't do the child count searching through the pointer?)

https://github.com/llvm/llvm-project/pull/90663