• d-bugmail puremagic.com (30/30) Apr 21 2022 https://issues.dlang.org/show_bug.cgi?id=23041

d-bugmail puremagic.com writes:

https://issues.dlang.org/show_bug.cgi?id=23041

          Issue ID: 23041
           Summary: elf objects contain an unused symbol with no name
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Keywords: backend
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody puremagic.com
          Reporter: duser neet.fi
                CC: duser neet.fi

search for STI_GCC in
https://github.com/dlang/dmd/blob/master/src/dmd/backend/elfobj.d

the part that adds the symbol name to the string table is commented out, but
the rest remain so the symbol is added with an empty name

it's harmless but some disassemblers warn about the empty name


to see it, compile a file containing "int x;" with "dmd -c test.d", then list
the names using "nm test.o":

0000000000000000 t 
0000000000000000 R _D4test12__ModuleInfoZ
0000000000000000 B _D4test1xi
                 U _d_dso_registry
                 U __start_minfo
                 U __stop_minfo

the first line is the symbol with no name

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