[Bug go/81926] go/parse.o differs between stage2 and stage3 for gcc 7.2.0

["dclarke at blastwave dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81926

--- Comment #4 from Dennis Clarke <dclarke at blastwave dot org> ---
elfdump in Solaris says stage2 section ".debug_info" size is 0x1636a2:  

Section Header[37]:  sh_name: .debug_info
    sh_addr:      0                   sh_flags:   0
    sh_size:      0x1636a2            sh_type:    [ SHT_PROGBITS ]
    sh_offset:    0x1faa0             sh_entsize: 0
    sh_link:      0                   sh_info:    0
    sh_addralign: 0x1

Whereas stage3 reports : 

Section Header[37]:  sh_name: .debug_info
    sh_addr:      0                   sh_flags:   0
    sh_size:      0x163698            sh_type:    [ SHT_PROGBITS ]
    sh_offset:    0x1faa0             sh_entsize: 0
    sh_link:      0                   sh_info:    0
    sh_addralign: 0x1


Not exactly 8 bytes. Looks like 10 bytes diff. All other "sh_size" section size
data matches. 

The output from elfdump is 75k lines long with 1134 lines of diff : 

d$ elfdump ./stage3-gcc/go/parse.o > /tmp/go_parse_elfdump.3
d$ elfdump ./stage2-gcc/go/parse.o > /tmp/go_parse_elfdump.2
d$ wc -l /tmp/go_parse_elfdump.3
   75428 /tmp/go_parse_elfdump.3
d$ wc -l /tmp/go_parse_elfdump.2
   75428 /tmp/go_parse_elfdump.2

d$ diff /tmp/go_parse_elfdump.2 /tmp/go_parse_elfdump.3 | wc -l 
    1134