https://sourceware.org/bugzilla/show_bug.cgi?id=18741
Bug ID: 18741
Summary: Corrupted .ARM.attributes section with -meabi=gnu
option
Product: binutils
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: markus.eisenmann at gmx dot at
Target Milestone: ---
I've created an GCC-toolchain with target=arm-eabi (using GCC 4.9.3, binutils
2.25) and use it with the option -mabi=apcs-gnu.
It still works, but I've received the readelf error-message "Unused bytes at
end of section" if I check the generated object-files.
The .ARM.attributes section seems to be corrupted and has the (hex) content:
41 0f 00 00 00 61 65 61 62 69 00 01 05 00 00 00 (section-size = 0x10).
After some tests - producing assembler-code and calling AS - I've detected the
AS-option -meabi=gnu as origin cause of this issue. In this case an
corrupted/incomplete .ARM.attributes-content (as above) will be generated in
the elf-output; with -meabi=4 (or 5) readeld shows the ARM-attributes w/o any
error-message.
Best regards from Salzburg,
Markus
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