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ActionReplay: Use Common::BitCast instead of reinterpret_cast in Subt…


Using reinterpret_cast (or a C-styled equivalent) to reinterpret
integers as floating-point values and vice-versa invokes undefined
behavior. Instead, use BitCast, which does this in a well-defined
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lioncash committed Jun 20, 2018
1 parent bdfc6de commit 0e437c41e5903cf14b739bb3358b5a6dddc34158
Showing with 3 additions and 2 deletions.
  1. +3 −2 Source/Core/Core/ActionReplay.cpp
@@ -31,6 +31,7 @@
#include <utility>
#include <vector>
#include "Common/BitUtils.h"
#include "Common/CommonTypes.h"
#include "Common/IniFile.h"
#include "Common/Logging/Log.h"
@@ -474,10 +475,10 @@ static bool Subtype_AddCode(const ARAddr& addr, const u32 data)
const u32 read = PowerPC::HostRead_U32(new_addr);
const float read_float = reinterpret_cast<const float&>(read);
const float read_float = Common::BitCast<float>(read);
// data contains an (unsigned?) integer value
const float fread = read_float + static_cast<float>(data);
const u32 newval = reinterpret_cast<const u32&>(fread);
const u32 newval = Common::BitCast<u32>(fread);
PowerPC::HostWrite_U32(newval, new_addr);
LogInfo("Old Value %08x", read);
LogInfo("Increment %08x", data);

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