Is Android realize tsan compiler instrumentation function?

[zhouzhijie199112]

I add parameter in mk ：
LOCAL_CFLAGS += -fsanitize=thread -O0 -g -pie -fPIE
but The generated module does not insert tsan code like __tsan_func_entry
I want to know why ?
Is the android realize tsan Compiler instrumentation function

[eugenis]

Is your target aarch64? TSan is 64-bit only. $ cat 1.cc void f(int *p) { *p = 42; } $ android-ndk-r21d/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android21-clang++ 1.cc -fsanitize=thread -O0 -g -fPIE -c && objdump -d 1.o 1.o: file format elf64-littleaarch64 Disassembly of section .text: 0000000000000000 <_Z1fPi>: 0: d100c3ff sub sp, sp, #0x30 4: a9027bfd stp x29, x30, [sp, #32] 8: 910083fd add x29, sp, #0x20 c: f9000be0 str x0, [sp, #16] 10: aa1e03e0 mov x0, x30 14: 94000000 bl 0 <__tsan_func_entry> 18: f9400be8 ldr x8, [sp, #16] 1c: f81f83a8 stur x8, [x29, #-8] 20: f85f83a9 ldur x9, [x29, #-8] 24: aa0903e0 mov x0, x9 28: f90007e9 str x9, [sp, #8] 2c: 94000000 bl 0 <__tsan_write4> 30: 5280054a mov w10, #0x2a // #42 34: f94007e8 ldr x8, [sp, #8] 38: b900010a str w10, [x8] 3c: 94000000 bl 0 <__tsan_func_exit> 40: a9427bfd ldp x29, x30, [sp, #32] 44: 9100c3ff add sp, sp, #0x30 48: d65f03c0 ret 000000000000004c <tsan.module_ctor>: 4c: f81f0ffe str x30, [sp, #-16]! 50: 94000000 bl 0 <__tsan_init> 54: f84107fe ldr x30, [sp], #16 58: d65f03c0 ret

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On Thu, Aug 13, 2020 at 1:16 AM zhouzhijie199112 ***@***.***> wrote: I add parameter in mk ： LOCAL_CFLAGS += -fsanitize=thread -O0 -g -pie -fPIE but The generated module does not insert tsan code like __tsan_func_entry I want to know why ? Is the android realize tsan Compiler instrumentation function — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1294>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADG4SSMDN7P4N72IWZ2FYTSAOON7ANCNFSM4P6AOWXA> .