How to use clang thread sanitizer on OSX?

Question

I am trying to use --thread-sanitizer option of clang on OSX:

$ clang++ -fthread-sanitizer -fpic tsan1.cc
Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
Target: x86_64-apple-darwin12.3.0
Thread model: posix
[...]
clang -cc1 version 4.2 based upon LLVM 3.2svn default target x86_64-apple-darwin12.3.0
[...]
Undefined symbols for architecture x86_64:
  "___tsan_func_entry", referenced from:
      threadfunc(void*) in tsan1-6f7gbr.o
[...]
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Looks like a linkage error. Should I link with some additional libs?

Found a bug in macports: http://trac.macports.org/ticket/38528 , must be not fixed yet — Maxim Razin, May 03 '13 at 23:31

score 2 · Answer 1 · answered Feb 19 '14 at 09:07

2

ThreadSanitizer is unsupported on Darwin for C++ yet. This is unlikely to change in at least half a year.

answered Feb 19 '14 at 09:07

Glider

164
3

Any sources for this? – jupp0r Mar 26 '15 at 22:08
2

This answer is obsolete. ThreadSanitizer has run on macOS for years. – Christopher Ian Stern Oct 11 '19 at 18:15

score 1 · Answer 2 · answered Nov 07 '19 at 12:25

1

It's been fixed. According to https://clang.llvm.org/docs/ThreadSanitizer.html

ThreadSanitizer is supported on the following OS: ... Darwin arm64, x86_64, ...

Also I just used it without any problems.

answered Nov 07 '19 at 12:25

TmsKtel

361
3
11

How to use clang thread sanitizer on OSX?

2 Answers2