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[common/error] remove preprocessor macros for strerror_r gating (#4450)

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We use C++, we can just use SFINAE for this.

Signed-off-by: lizzie <lizzie@eden-emu.dev>

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4450
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
This commit is contained in:
lizzie
2026-09-19 08:21:39 +02:00
committed by crueter
parent 9a30172e45
commit 2d1eb0dab9
1 changed files with 18 additions and 20 deletions
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src/common/error.cpp
+18 -20
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@@ -17,35 +17,33 @@
namespace Common {
// glibc, mlibc, musl, and newlib all define their own variants of strerror_r
// We don't need to use the preprocessor, we can just select depending on return type
template<typename T> std::string HandleStrerrorR(T r, char *err_str);
template<> std::string HandleStrerrorR(char* r, char *) { return std::string{r}; }
template<> std::string HandleStrerrorR(const char* r, char *) { return std::string{r}; }
template<> std::string HandleStrerrorR(int r, char *err_str) {
return std::string{r != 0
? "(strerror_r failed to format error)"
: err_str};
}
std::string NativeErrorToString(int e) {
#ifdef _WIN32
LPSTR err_str;
DWORD res = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, e, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<LPSTR>(&err_str), 1, nullptr);
if (!res) {
return "(FormatMessageA failed to format error)";
LPSTR(&err_str), 1, nullptr);
if (res) {
std::string ret(err_str);
LocalFree(err_str);
return ret;
}
std::string ret(err_str);
LocalFree(err_str);
return ret;
return "(FormatMessageA failed to format error)";
#else
char err_str[255];
#if defined(__ANDROID__) || \
(defined(__GLIBC__) && (_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600)))
// Thread safe (GNU-specific)
const char* str = strerror_r(e, err_str, sizeof(err_str));
return std::string(str);
#else
// Thread safe (XSI-compliant)
int second_err = strerror_r(e, err_str, sizeof(err_str));
if (second_err != 0) {
return "(strerror_r failed to format error)";
}
return std::string(err_str);
#endif // GLIBC etc.
return HandleStrerrorR(strerror_r(e, err_str, sizeof(err_str)), err_str);
#endif // _WIN32
}