Failure to compile libbpf-tools directory due to rust build error #5389
Description
$ git clone --recursive https://github.com/iovisor/bcc
$ cd bcc/libbpf-tools
$ make
[...]
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1024:42
|
1024 | file_name: from_cstr((*c).params.elf.file_name),
| ^^-^^^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
= note: `#[deny(dangerous_implicit_autorefs)]` on by default
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1024 | file_name: from_cstr((&(*c).params.elf).file_name),
| ++ +
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1025:35
|
1025 | base_address: (*c).params.elf.base_address,
| ^^-^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1025 | base_address: (&(*c).params.elf).base_address,
| ++ +
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1029:32
|
1029 | let kallsyms = (*c).params.kernel.kallsyms;
| ^^-^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1029 | let kallsyms = (&(*c).params.kernel).kallsyms;
| ++ +
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1030:36
|
1030 | let kernel_image = (*c).params.kernel.kernel_image;
| ^^-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1030 | let kernel_image = (&(*c).params.kernel).kernel_image;
| ++ +
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1046:29
|
1046 | pid: if (*c).params.process.pid > 0 {
| ^^-^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1046 | pid: if (&(*c).params.process).pid > 0 {
| ++ +
error: implicit autoref creates a reference to the dereference of a raw pointer
--> src/lib.rs:1047:30
|
1047 | Some((*c).params.process.pid)
| ^^-^^^^^^^^^^^^^^^^^^^^
| |
| this raw pointer has type `*const sym_src_cfg`
|
= note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
= note: references are created through calls to explicit `Deref(Mut)::deref(_mut)` implementations
help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
|
1047 | Some((&(*c).params.process).pid)
| ++ +
warning: unused return value of `Box::<T>::from_raw` that must be used
--> src/lib.rs:1089:9
|
1089 | Box::from_raw((*symbolizer).symbolizer);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
help: use `let _ = ...` to ignore the resulting value
|
1089 | let _ = Box::from_raw((*symbolizer).symbolizer);
| +++++++
warning: unused return value of `Box::<T>::from_raw` that must be used
--> src/lib.rs:1090:9
|
1090 | Box::from_raw(symbolizer);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
help: use `let _ = ...` to ignore the resulting value
|
1090 | let _ = Box::from_raw(symbolizer);
| +++++++
warning: `blazesym` (lib) generated 8 warnings
error: could not compile `blazesym` (lib) due to 6 previous errors; 8 warnings emittedIt looks like the blazesym submodule is 3 years out of date, and just updating to the latest is not enough, but needs a bit of work.
Versions:
❯ rustc --version --verbose
rustc 1.89.0 (29483883e 2025-08-04)
binary: rustc
commit-hash: 29483883eed69d5fb4db01964cdf2af4d86e9cb2
commit-date: 2025-08-04
host: x86_64-unknown-linux-gnu
release: 1.89.0
LLVM version: 20.1.7- Arch Linux (rolling release distro)
- Linux 6.15.7 (x86_64)