https://sourceware.org/bugzilla/show_bug.cgi?id=32341
Bug ID: 32341
Summary: ld does not keep SHF_ALLOC section indices contiguous
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: amerey at redhat dot com
Target Milestone: ---
Created attachment 15780
--> https://sourceware.org/bugzilla/attachment.cgi?id=15780&action=edit
sections and segments info for strip with contiguous SHF_ALLOC
Since commit 7ecf0250f7f086, ld appears more likely to not keep all SHF_ALLOC
sections indices in a contiguous group. This results in an additional
(unnecessary) PT_LOAD segment.
For example, using ld built from commit 7ecf0250f7f086, the elfutils strip
executable contains the following sections:
[24] .bss NOBITS 0000000000453660 00052660 000002c8 0 WA
0 0 32
[25] .comment PROGBITS 0000000000000000 00052948 0000002e 1 MS
0 0 1
[26] .annobin.notes STRTAB 0000000000000000 00052976 0000014f 1 MS
0 0 1
[27] .gnu.build.attributes NOTE 0000000000455928 00052ac8 00000144 0
0 0 4
[28] .note.ABI-tag NOTE 0000000000455928 00052928 00000020 0 A
0 0 4
Sections 24 and 28 have SHF_ALLOC while sections 25-27 do not. The strip
executable also contains 5 PT_LOAD segments (see attachment).
Using ld build from the previous commit (4339a3ffc39), this does not occur.
Section .note.ABI-tag appears at index 3 (right after .note.gnu.build-id at
index 2) instead of 28, which keeps all SHF_ALLOC sections indices contiguous.
There are also 4 PT_LOADs instead of 5 (see attachment).
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