| Issue |
63885
|
| Summary |
[AIX] Invalid value written for relocation target for local-exec TLS access
|
| Labels |
miscompilation,
platform:aix
|
| Assignees |
amy-kwan
|
| Reporter |
hubert-reinterpretcast
|
In the following, the value written at relocation's target in the object out of the compiler is supposed to be the value of the symbol, which is 4:
```
0000000000000004 l O *COM* 0000000000000004 (idx: 15) y[UL]
```
however, we get 0 (and not 4):
```
0000000000000078 (idx: 11) y[TC]:
78: 00 00 00 00 <unknown>
0000000000000078: R_TLS_LE (idx: 15) y[UL]
7c: 00 00 00 00 <unknown>
```
As a result, the program does the wrong thing (access to `y` instead accesses `x`).
### Source (`<stdin>`):
```c
static __thread int x, y;
int main(void) {
x = 1;
return x + y;
}
```
### Compiler invocation:
```
clang -ftls-model=local-exec -m64 -pthreads -xc -
```
### Run invocation and result:
```
$ ./a.out; echo $?
2
```
### Expected result:
```
1
```
![]()
_______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
