llvmbot
commented
8 months ago @llvm/issue-subscribers-tools-llvm-cxxfilt
Author: Hubert Tong (hubert-reinterpretcast)
The documentation claims:
> `llvm-cxxfilt` is a symbol demangler that can be used as a replacement for the GNU `c++filt` tool.
`llvm-cxxfilt` claims to support `gnu` "GNU/Itanium" style mangling; however, `gnu` is not Itanium-style mangling for GNU `c++filt` (`gnu-v3` is).
For example:
```
$ c++filt --format=gnu foo__Fv _Z3foov
foo(void)
_Z3foov
$ c++filt --format=gnu-v3 foo__Fv _Z3foov
foo__Fv
foo()
```
From the output of `llvm-cxxfilt --help`:
```
--format=<value> Specify mangling format. Currently ignored because only 'gnu' is supported
```
and in the documentation (https://llvm.org/docs/CommandGuide/llvm-cxxfilt.html):
> `--format=`<value>, `-s`
> Mangling scheme to assume. Valid values are auto (default, auto-detect the style) and gnu (assume GNU/Itanium style).
It seems an update from `gnu` to `gnu-v3` is in order. The option does not appear to check what is passed to it, so it is probably just an update to the text.
dwblaikie
hubert-reinterpretcast
The documentation claims:
llvm-cxxfiltclaims to supportgnu"GNU/Itanium" style mangling; however,gnuis not Itanium-style mangling for GNUc++filt(gnu-v3is).For example:
From the output of
llvm-cxxfilt --help:and in the documentation (https://llvm.org/docs/CommandGuide/llvm-cxxfilt.html):
It seems an update from
gnutognu-v3is in order. The option does not appear to check what is passed to it, so it is probably just an update to the text.