FIX: C1001: 'e:\b_bld\c2\P2\main.c', line 374 with /Zi Switch

Compiling an application that uses a local temporary static union, as does the sample code shown in the More Information section below, may cause the following internal compiler error when built with debug information only: TEST.CPP is the sample code file given in the More Information section below.

Use either of these two workarounds:

• Remove the /Zi compiler option. -or-
  
  
• Create an object to represent the local static union:

        static union { int z;} tmp;
  						

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This problem was fixed in Visual C++, 32-bit Edition, version 4.0.

/* Compile options needed: /Zi
*/ 

static union { int i; };
static union { int k; };

void local()
{
   union { int x; };
   union { int y; };
   static union { int z; };
}