Compiler crash (in Debug build): "Instruction does not dominate all uses!"

CVI 2015 crashes with following errors:

Build Status (crash.prj - Debug)
 emf.c - 19 warnings
      [...warnings cut...]
      1, 1   Instruction does not dominate all uses!
      1, 1   %13298 = call %3* @_PtrCastToScalar(%3* inttoptr (i32 3 to %3*), { i8*, i32 }* %827, i32 2), !dbg !2461
      1, 1   %13745 = call %3* @_PtrCastToScalar(%3* %13298, { i8*, i32 }* %827, i32 2), !dbg !2533
      1, 1   Instruction does not dominate all uses!
      1, 1   %13745 = call %3* @_PtrCastToScalar(%3* %13298, { i8*, i32 }* %827, i32 2), !dbg !2533
      1, 1   %14123 = call %3* @_PtrCastToScalar(%3* %13745, { i8*, i32 }* %827, i32 2), !dbg !2594
      1, 1   Instruction does not dominate all uses!
      1, 1   %14123 = call %3* @_PtrCastToScalar(%3* %13745, { i8*, i32 }* %827, i32 2), !dbg !2594
      1, 1   %14719 = call %3* @_PtrCastToScalar(%3* %14123, { i8*, i32 }* %827, i32 2), !dbg !2685
      1, 1   Instruction does not dominate all uses!
      1, 1   %14719 = call %3* @_PtrCastToScalar(%3* %14123, { i8*, i32 }* %827, i32 2), !dbg !2685
      1, 1   %15178 = call %3* @_PtrCastToScalar(%3* %14719, { i8*, i32 }* %827, i32 2), !dbg !2757
      1, 1   Broken module found, compilation aborted!
      1, 1   This application has requested the Runtime to terminate it in an unusual way.
      1, 1   Please contact the application's support team for more information.
Build failed.

Steps to reproduce:

1. Download zint-2.6.1.src.tar.gz from https://sourceforge.net/projects/zint/files/zint/2.6.1/
2. Copy emf.c, emf.h, common.h, zint.h from backend dir into an empty dir
3. Create empty textfile malloc.h
4. Create new CVI project
5. Add emf.c and add "." to include paths
6. Compile emf.c

Build succedes when using Release mode.