bug#18743: 25.0.50; Clang 3.0 fails to compile src/fns.c, GCC 4.8 cannot dump emacs

[Peter Dyballa]

At revno: 118128

Apple clang version 3.0 (tags/Apple/clang-211.10.1) (based on LLVM 3.0svn)
Target: x86_64-apple-darwin10.8.0
Thread model: posix

Mac OS X 10.6.8; this is the Clang compiler coming with Apple's Developer Tools 
(Xcode 4.2 (4C199)).


        fns.c:1929:16: error: read-only variable is not assignable
                  *dest++ = *a++;
                             ~^

GCC 4.8 accepts this construct, but fails when dumping emacs:

        Dumping under the name emacs
        --- List of All Regions ---
           address     size prot maxp
        --- List of Regions to be Dumped ---
           address     size prot maxp
        --- Header Information ---
        Magic = 0xfeedfacf
        CPUType = 16777223
        CPUSubType = -2147483645
        FileType = 0x2
        NCmds = 48
        SizeOfCmds = 4664
        Flags = 0x00000085
        Highest address of load commands in input file: 0x100656000
        Lowest offset of all sections in __TEXT segment:   0x2f58
        --- List of Load Commands in Input File ---
        # cmd              cmdsize name                address     size
        0 LC_SEGMENT_64          72 __PAGEZERO                0 0x100000000
        1 LC_SEGMENT_64         712 __TEXT           0x100000000 0x1e7000
                                   __text           0x100002f58 0x17a878
                                   __text_cold      0x10017d7d0    0x2b2
                                   __text_startup   0x10017da82   0x1394
                                   __stubs          0x10017ee16   0x10aa
                                   __stub_helper    0x10017fec0   0x1bd6
                                   __cstring        0x100181a98  0x18b68
                                   __const          0x10019a600    0xad0
                                   __eh_frame       0x10019b0d0  0x4bf28
        2 LC_SEGMENT_64        1272 __DATA           0x1001e7000 0x398000
                                   __program_vars   0x1001e7000     0x28
                                   __got            0x1001e7028     0xe0
                                   __nl_symbol_ptr  0x1001e7108     0x10
                                   __la_symbol_ptr  0x1001e7118   0x1638
                                   __data           0x1001e8760 0x2f1338
                                   __static_data    0x1004d9a98     0x26
                                   __const          0x1004d9ac0   0x49d0
                                   __bss2           0x1004de490    0x150
                                   __pu_bss2        0x1004de5e0     0x64
                                   __bss            0x1004de660    0x105
                                   __bss4           0x1004de770  0x89650
                                   __common         0x100567dc0      0x4
                                   __bss3           0x100567dc8   0x1f28
                                   __pu_bss4        0x100569cf0  0x12e28
                                   __pu_bss3        0x10057cb18   0x1678
        3 LC_SEGMENT_64          72 __LINKEDIT       0x10057f000  0xd7000
        4 LC_DYLD_INFO_ONLY      48
        5 LC_SYMTAB              24
        6 LC_DYSYMTAB            80
        7 LC_LOAD_DYLINKER       32
        8 LC_UUID                24
        9 LC_VERSION_MIN_MACOSX      16
        10 LC_UNIXTHREAD         184
        11 LC_LOAD_DYLIB          56
        12 LC_LOAD_DYLIB          56
        13 LC_LOAD_DYLIB          64
        14 LC_LOAD_DYLIB          56
        15 LC_LOAD_DYLIB          56
        16 LC_LOAD_DYLIB          56
        17 LC_LOAD_DYLIB          56
        18 LC_LOAD_DYLIB          56
        19 LC_LOAD_DYLIB          56
        20 LC_LOAD_DYLIB          56
        21 LC_LOAD_DYLIB          56
        22 LC_LOAD_DYLIB          56
        23 LC_LOAD_DYLIB          64
        24 LC_LOAD_DYLIB          56
        25 LC_LOAD_DYLIB          64
        26 LC_LOAD_DYLIB          64
        27 LC_LOAD_DYLIB          72
        28 LC_LOAD_DYLIB          64
        29 LC_LOAD_DYLIB          64
        30 LC_LOAD_DYLIB          56
        31 LC_LOAD_DYLIB          56
        32 LC_LOAD_DYLIB          64
        33 LC_LOAD_DYLIB          64
        34 LC_LOAD_DYLIB          64
        35 LC_LOAD_DYLIB          56
        36 LC_LOAD_DYLIB          64
        37 LC_LOAD_DYLIB          64
        38 LC_LOAD_DYLIB          64
        39 LC_LOAD_DYLIB          64
        40 LC_LOAD_DYLIB          56
        41 LC_LOAD_DYLIB          56
        42 LC_LOAD_DYLIB          56
        43 LC_LOAD_DYLIB          64
        44 LC_LOAD_DYLIB          56
        45 LC_LOAD_DYLIB          64
        46 LC_FUNCTION_STARTS      16
        47 LC_DATA_IN_CODE        16
        0x101efc080 (sz:   0x3f24/  0x3f28)
        0x101e00000 (sz:  0x8c3e5/ 0xfc080)
        0x101bfc080 (sz:   0x3f25/  0x3f28)
        0x101b00000 (sz:  0xfc07f/ 0xfc080)
        0x1037f8000 (sz:   0x20ca/  0x7fa0)
        0x103000000 (sz: 0x20a3fd/0x7f8000)
        0x102ff8000 (sz:   0x7f97/  0x7fa0)
        0x102800000 (sz: 0x7f7fff/0x7f8000)
        0x101977000 (sz:        0/  0x1000)
        --- Load Commands written to Output File ---
        Writing segment __PAGEZERO       @        0 (       0/0x100000000 @     
     0)
        Writing segment __TEXT           @        0 (0x1e7000/0x1e7000 @ 
0x100000000)
        Writing segment __DATA           @ 0x1e7000 (0x398000/0x398000 @ 
0x1001e7000)
                section __program_vars   at 0x1e7000 - 0x1e7028 (sz:     0x28)
                section __got            at 0x1e7028 - 0x1e7108 (sz:     0xe0)
                section __nl_symbol_ptr  at 0x1e7108 - 0x1e7118 (sz:     0x10)
                section __la_symbol_ptr  at 0x1e7118 - 0x1e8750 (sz:   0x1638)
                section __data           at 0x1e8760 - 0x4d9a98 (sz: 0x2f1338)
                section __static_data    at 0x4d9a98 - 0x4d9abe (sz:     0x26)
                section __const          at 0x4d9ac0 - 0x4de490 (sz:   0x49d0)
                section __bss2           at 0x4de490 - 0x4de5e0 (sz:    0x150)
                section __pu_bss2        at 0x4de5e0 - 0x4de644 (sz:     0x64)
        unexec: my_endbss_static is not in section __bss
        make[1]: *** [bootstrap-emacs] Error 1
        make: *** [src] Error 2


There are no problems with GCC 4.2.

--
Greetings

  Pete                                           0
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