| Issue |
57288
|
| Summary |
[compiler-rt] TSAN Dynamic Library Linker Error on Ubuntu
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
lstricevic
|
When compiling this piece of code with dynamically linked ThreadSanitizer runtime library, linking error occurs:
```
#include <stdio.h>
#include <pthread.h>
int x=0;
void* fun(void* in) {
for (int i = 0; i < 10000000; i++ )
x++;
return NULL;
}
int main(){
pthread_t t1, t2;
pthread_create(&t1, NULL, fun, NULL);
pthread_create(&t2, NULL, fun, NULL);
pthread_join(t1, NULL);
pthread_join(t2, NULL);
printf("X: %d\n", x);
return 0;
}
```
Compiling with:
`clang -fsanitize=thread -shared-libsan -lpthread race.c`
gives linker error:
```
/usr/bin/ld: /opt/src/llvm-project/build-2108/lib/clang/16.0.0/lib/x86_64-unknown-linux-gnu/libclang_rt.tsan.so: siglongjmp: invalid version 21 (max 0)
/opt/src/llvm-project/build-2108/lib/clang/16.0.0/lib/x86_64-unknown-linux-gnu/libclang_rt.tsan.so: error adding symbols: Bad value
```
Affected versions of LLVM are 14.x, 15.x and current (commit d9756fa723be). Error can be also reproduced with binary release: https://github.com/llvm/llvm-project/releases/download/llvmorg-14.0.0/clang+llvm-14.0.0-x86_64-linux-gnu-ubuntu-18.04.tar.xz
The tests have been made on x86_64 Ubuntu 18.04 and 20.04 versions.
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