strcpy to Known Inactive Functions

[ax3l]

Seen in #2235 / ECP-WarpX/impactx#825

error: Enzyme: No augmented forward pass found for

Per discussion in #2235: Should this also go in another list?

[ax3l]

I found another one for

error: Enzyme: No augmented forward pass found for _ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>::_M_replace(unsigned long, unsigned long, char const*, unsigned long))
 at context:   %16 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef 0, i64 noundef 0, ptr noundef nonnull @.str.377, i64 noundef 15) #50
freeing without malloc   %32 = load ptr, ptr %7, align 8, !tbaa !17
...

error.txt

[ZuseZ4]

Yes that's not uncommon. I had a few runs in the past where I added a lot fo them, but c++/compiler just keep adding new ones. Just add it to this PR, potentially use the demangled name (use cxx-filt)

[ax3l]

Thanks!

$ echo "_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE10_M_replaceEmmPKcm" | c++filt 
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned long, unsigned long, char const*, unsigned long)

Hm, that is already listed here?

Enzyme/enzyme/Enzyme/ActivityAnalysis.cpp

Lines 377 to 391 in 5a746b4

	// __cxx11
	"std::__cxx11::basic_string",
	"std::__cxx11::basic_ios",
	"std::__cxx11::basic_ostringstream",
	"std::__cxx11::basic_istringstream",
	"std::__cxx11::basic_istream",
	"std::__cxx11::basic_ostream",
	"std::__cxx11::basic_ifstream",
	"std::__cxx11::basic_ofstream",
	"std::__cxx11::basic_stringbuf",
	"std::__cxx11::basic_filebuf",
	"std::__cxx11::basic_streambuf",
	// non __cxx11
	"std::basic_string",

[ax3l]

When I add the mangled name to the same place as I added strcpy then I manage to suppress it.

Interesting that the demangled function name comparison in DemangledKnownInactiveFunctionsStartingWith does not seem to work for it. Hesitant to add it twice, lemme know what's best :)