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temp: replace raw unreachable ub hints with own handler

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dword64 2026-04-05 22:51:33 +02:00
parent 7dc786ec3e
commit 6357a60465
1 changed files with 43 additions and 3 deletions
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46
VTIL-Common/util/intrinsics.hpp
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@ -52,16 +52,56 @@
#define HAS_BIT_CAST __has_builtin(__builtin_bit_cast)
#endif
#include <cstdio>
#include <cstdlib>
#ifdef _MSC_VER
#include <intrin.h>
#define unreachable() __assume(0)
#define FUNCTION_NAME __FUNCSIG__
#ifndef NOMINMAX
#define NOMINMAX
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#if defined(__i386__) || defined(__x86_64__)
#include <emmintrin.h>
#endif
#endif
#define unreachable() __builtin_unreachable()
namespace vtil::detail
{
[[noreturn]] inline void unreachable_handler( const char* file, int line, const char* func )
{
// Print to stderr works for console apps and piped output.
//
fprintf( stderr, "\n[FATAL] unreachable code reached at %s:%d in %s\n", file, line, func );
fflush( stderr );
#ifdef _MSC_VER
// emit to Windows debug output so it shows in
// VS / windbg even for gui / service processes
//
char buf[ 512 ];
snprintf( buf, sizeof( buf ),
"[FATAL] unreachable code reached at %s:%d in %s\n", file, line, func );
OutputDebugStringA( buf );
// Break into debugger if attached, otherwise just terminate
//
if ( IsDebuggerPresent() ) __debugbreak();
#endif
// _Exit skips atexit handlers and CRT cleanup avoids the
// abort() dialog on Windows and any cascading destruction issues.
//
_Exit( 3 );
}
}
#ifdef _MSC_VER
#define unreachable() vtil::detail::unreachable_handler( __FILE__, __LINE__, __FUNCSIG__ )
#define FUNCTION_NAME __FUNCSIG__
#else
#define unreachable() vtil::detail::unreachable_handler( __FILE__, __LINE__, __PRETTY_FUNCTION__ )
#define __forceinline __attribute__((always_inline))
#define _AddressOfReturnAddress() ((void*)__builtin_frame_address(0))
#define FUNCTION_NAME __PRETTY_FUNCTION__