| Issue |
115706
|
| Summary |
LLD strips PC-TABLE data lld:ELF
|
| Labels |
lld
|
| Assignees |
|
| Reporter |
noam1610
|
I am compiling some C code (hello_world.c) as an example with SanitizerCoverage (trace-pc-guard and pc-table).
Changing the linker to lld (with --fuse-ld=lld) strips the pcs addresses from the table:
Here are the 2 examples:
1. Default linker
Compiling:
```
clang-18 hello_world.c -o hello_world -fsanitize-coverage=trace-pc-guard,pc-table
```
Looking at the pc-table section in the elf sections ( __sancov_pcs)
```
llvm-readelf-20 ./hello_world -x __sancov_pcs
> 0x00046b70 **50ea0200** 00000000 01000000 00000000
```
You can see that the address of the instrumented basic block is written
2. Using lld as a linker
Compiling:
```
clang-18 hello_world.c -o hello_world -fsanitize-coverage=trace-pc-guard,pc-table --fuse-ld=lld
```
Looking at the pc-table section in the elf sections ( __sancov_pcs)
```
llvm-readelf-20 ./hello_world -x __sancov_pcs
> 0x00047430 **00000000** 00000000 01000000 00000000
```
You can see that the address of the instrumented basic block is 0
Are there some conflicts between SanitizerCoverage and the Linker ?
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