Errors in compilation of complier-rt-sanititizers recipe file in aarch64 platform.

[YaswanthDara]

Hi team,
I am using address sanitizers and able to compile our recipe file which uses complier-rt-sanititizers across all platforms but its throwing the following errors for the aarch64.

1. relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `__hwasan_shadow_memory_dynamic_address' which may bind externally can not be used when making a shared object.
2. DWARF error: invalid or unhandled FORM value: 0x23.

I tried adding the -fPIC flags but still throwing different errors. Below is the full error. Pls help me with this. Thanks.

/tmp/work/cortexa78c-poky-linux/compiler-rt-sanitizers/14.0.6-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/aarch64-poky-linux-ld: projects/compiler-rt/lib/hwasan/CMakeFiles/RTHwasan_dynamic.aarch64.dir/hwasan.cpp.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol __hwasan_shadow_memory_dynamic_address' which may bind externally can not be used when making a shared object; recompile with -fPIC tmp/work/cortexa78c-poky-linux/compiler-rt-sanitizers/14.0.6-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux/aarch64-poky-linux-ld: DWARF error: invalid or unhandled FORM value: 0x23 | projects/compiler-rt/lib/hwasan/CMakeFiles/RTHwasan_dynamic.aarch64.dir/hwasan.cpp.o: in function __hwasan_print_shadow: | hwasan.cpp:(.text+0xeec): dangerous relocation: unsupported relocation

I also found that from table here https://github.com/google/sanitizers/wiki/AddressSanitizer that asan is not supported for arm64.

[kraj]

@YaswanthDara thanks for the report, it seems you are on clang 14.x release. Are you able to repeoduce same error on master branch with Clang 19 as well ?

[YaswanthDara]

hi @kraj currently i was unable to upgrade the clang version upgrade in my organisation. can u pls suggest other ways? Thanks