链接器消除了Delphi 2009功能 [英] Delphi 2009 Function eliminated by linker

问题描述

我想在调试项目时使用功能 DateTimeToStr 。我想使用评估/修改窗口或监视窗口。这总是会导致错误链接器消除了功能。

I want to use the function DateTimeToStr while debugging a project. I want to use either the evaluate/modify window, or the watch window. This always results in the error "Function eliminated by linker".

我确保项目使用了该功能（我也明确地在函数中放置了一个调用我想调试），也关闭了优化并重新编译了整个项目。

I've ensured that the function is used by the project (I also placed a call explicitly in the function I want to debug), also I turned off the optimization and recompiled the whole project.

推荐答案

我制作了以下程序

program WhereDidItGo;
{$APPTYPE CONSOLE}
uses
  SysUtils;

begin
  DateTimeToStr(0.0);
end.

并准确找到您要报告的内容。评估/修改窗口报告该功能已被删除。

And found exactly what you report. The evaluate/modify window reports that the function was eliminated. Weird.

无论如何，我尝试了一下，这似乎足以欺骗它。

Anyway, I tried this, which seemed to be enough to trick it.

program WhyDoesThisSolveTheOddity;
{$APPTYPE CONSOLE}
uses
  SysUtils;

var
  FunctionPtr: function(const DateTime: TDateTime): string;
  VarFalse: Boolean;

begin
  if VarFalse then
    FunctionPtr := @DateTimeToStr;
end.

也许问题在于该函数声明为内联。尽管在我的测试中，实际上并未内联函数调用。

Perhaps the issue is that the function is declared as being inline. Although in my tests, the function call was not actually being inlined.

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