[Bug debug/101987] gcc 10.3.1 fails to generate debugging information for aarch64 .S files

[dcmay at copper dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101987

--- Comment #2 from Dietmar May <dcmay at copper dot net> ---
$ /opt/linaro/10.3.1/bin/aarch64-none-elf-gcc -v -g src/boot.S -c
Using built-in specs.
COLLECT_GCC=/opt/linaro/10.3.1/bin/aarch64-none-elf-gcc
Target: aarch64-none-elf
Configured with: /data/jenkins/workspace/GNU-toolchain/arm-10/src/gcc/configure
--target=aarch64-none-elf
--prefix=/data/jenkins/workspace/GNU-toolchain/arm-10/build-aarch64-none-elf/install//
--with-gmp=/data/jenkins/workspace/GNU-toolchain/arm-10/build-aarch64-none-elf/host-tools
--with-mpfr=/data/jenkins/workspace/GNU-toolchain/arm-10/build-aarch64-none-elf/host-tools
--with-mpc=/data/jenkins/workspace/GNU-toolchain/arm-10/build-aarch64-none-elf/host-tools
--with-isl=/data/jenkins/workspace/GNU-toolchain/arm-10/build-aarch64-none-elf/host-tools
--disable-shared --disable-nls --disable-threads --disable-tls
--enable-checking=release --enable-languages=c,c++,fortran --with-newlib
--with-pkgversion='GNU Toolchain for the A-profile Architecture 10.3-2021.07
(arm-10.29)' --with-bugurl=https://bugs.linaro.org/
Thread model: single
Supported LTO compression algorithms: zlib
gcc version 10.3.1 20210621 (GNU Toolchain for the A-profile Architecture
10.3-2021.07 (arm-10.29)) 
COLLECT_GCC_OPTIONS='-v' '-g' '-c' '-mlittle-endian' '-mabi=lp64'
 /opt/linaro/10.3.1/bin/../libexec/gcc/aarch64-none-elf/10.3.1/cc1 -E -lang-asm
-quiet -v -iprefix /opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/
src/boot.S -mlittle-endian -mabi=lp64 -g -fworking-directory
-fno-directives-only -o /tmp/ccjOmWwv.s
ignoring nonexistent directory
"/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/sys-include"
ignoring duplicate directory
"/opt/linaro/10.3.1/bin/../lib/gcc/../../lib/gcc/aarch64-none-elf/10.3.1/include"
ignoring duplicate directory
"/opt/linaro/10.3.1/bin/../lib/gcc/../../lib/gcc/aarch64-none-elf/10.3.1/include-fixed"
ignoring nonexistent directory
"/opt/linaro/10.3.1/bin/../lib/gcc/../../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/sys-include"
ignoring duplicate directory
"/opt/linaro/10.3.1/bin/../lib/gcc/../../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/include"
#include "..." search starts here:
#include <...> search starts here:
 /opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/include
 /opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/include-fixed

/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-g' '-c' '-mlittle-endian' '-mabi=lp64'

/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/bin/as
--gdwarf2 -EL -mabi=lp64 -o boot.o /tmp/ccjOmWwv.s
COMPILER_PATH=/opt/linaro/10.3.1/bin/../libexec/gcc/aarch64-none-elf/10.3.1/:/opt/linaro/10.3.1/bin/../libexec/gcc/:/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/bin/
LIBRARY_PATH=/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/:/opt/linaro/10.3.1/bin/../lib/gcc/:/opt/linaro/10.3.1/bin/../lib/gcc/aarch64-none-elf/10.3.1/../../../../aarch64-none-elf/lib/
COLLECT_GCC_OPTIONS='-v' '-g' '-c' '-mlittle-endian' '-mabi=lp64'