diff options
author | Johannes Stoelp <johannes.stoelp@gmail.com> | 2024-03-27 19:37:05 +0100 |
---|---|---|
committer | Johannes Stoelp <johannes.stoelp@gmail.com> | 2024-03-27 19:37:05 +0100 |
commit | ffdd9bb38eded278f4e0ed1f54f8d7ec187ec52c (patch) | |
tree | ffee1981c50c537f3b2b6014e347c0889471c21d /src | |
parent | 0ccba0943d477b71cdccd2505eb81b95f091263a (diff) | |
download | notes-ffdd9bb38eded278f4e0ed1f54f8d7ec187ec52c.tar.gz notes-ffdd9bb38eded278f4e0ed1f54f8d7ec187ec52c.zip |
c++filt: note to demangle type
Diffstat (limited to 'src')
-rw-r--r-- | src/development/c++filt.md | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/src/development/c++filt.md b/src/development/c++filt.md index 2592ba9..38607ee 100644 --- a/src/development/c++filt.md +++ b/src/development/c++filt.md @@ -2,7 +2,8 @@ ## Demangle symbol ```markdown - c++-filt <symbol_str> + c++-filt [opts] <symbol_str> + -t Try to also demangle types. ``` ## Demangle stream @@ -10,3 +11,36 @@ For example dynamic symbol table: ```markdown readelf -W --dyn-syms <elf> | c++filt ``` + +## Demangle types +```c++ +// file: type.cc +#include <cstdio> +#include <typeinfo> + +#define P(ty) printf(#ty " -> %s\n", typeid(ty).name()) + +template <typename T = void> +struct Foo {}; + +int main() { + P(int); + P(unsigned char); + P(Foo<>); + P(Foo<int>); +} +``` +Build and run: +```sh +$ clang++ type.cc && ./a.out | c++filt +int -> i +unsigned char -> h +Foo<> -> 3FooIvE +Foo<int> -> 3FooIiE + +$ clang++ type.cc && ./a.out | c++filt -t +int -> int +unsigned char -> unsigned char +Foo<> -> Foo<void> +Foo<int> -> Foo<int> +``` |