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[Bug default/24204] New: [dwz, low-mem] Couldn't find DIE referenced by DW_OP_GNU_implicit_pointer
https://sourceware.org/bugzilla/show_bug.cgi?id=24204
Bug ID: 24204
Summary: [dwz, low-mem] Couldn't find DIE referenced by
DW_OP_GNU_implicit_pointer
Product: dwz
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: default
Assignee: nobody at sourceware dot org
Reporter: vries at gcc dot gnu.org
CC: dwz at sourceware dot org
Target Milestone: ---
Using the cc1 from pr24195, and the tentative fix we produce cc1.2:
...
$ dwz -l 0 cc1 -o cc1.2
...
Then with master we run into:
...
$ dwz -l 0 cc1.2
dwz: cc1: Couldn't find DIE referenced by DW_OP_GNU_implicit_pointer
...
Using a more detailed error message, we get:
...
dwz: cc1: Couldn't find DIE@0x800 referenced by DW_OP_GNU_implicit_pointer in
DIE@0x369186
...
The die is:
...
<12><369186>: Abbrev Number: 3 (DW_TAG_formal_parameter)
<369187> DW_AT_abstract_origin: <0xecc97>
<36918b> DW_AT_location : 0x4ee259 (location list)
<36918f> DW_AT_GNU_locviews: 0x4ee255
...
Referring to locviews and location list:
...
004ee255 v000000000000004 v000000000000001 location view pair
004ee257 v000000000000000 v000000000000000 location view pair
004ee259 v000000000000004 v000000000000001 views at 004ee255 for:
0000000000876020 000000000087602b (DW_OP_GNU_implicit_pointer:
<0x800> 0)
004ee271 v000000000000000 v000000000000000 views at 004ee257 for:
0000000000587ca8 0000000000587cb0 (DW_OP_GNU_implicit_pointer:
<0x800> 0)
004ee289 <End of list>
...
which refer to DIE:
...
<1><800>: Abbrev Number: 112 (DW_TAG_dwarf_procedure)
<801> DW_AT_location : 21 byte block: 9e 13 66 69 72 73 74 5f 69 6d 6d
5f 75 73 65 5f 73 74 6d 74 0 (DW_OP_implicit_value 19 byte block: 66 69 72
73 74 5f 69 6d 6d 5f 75 73 65 5f 73 74 6d 74 0 )
...
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