Eigen Compiler Suite

The following simplified code with is part of a SDL3 wrapper library:

libsdl3.cpp:

// SDL3 API wrapper for Linux

#include <def/linuxlib>
LIBRARY (sdl3, "libSDL3.so")
#define SDL3FUNCTION(name, parameters) FUNCTION (sdl3, name, parameters)

SDL3FUNCTION (SDL_rand, 1)
SDL3FUNCTION (SDL_randf, 0)

SDL3.mod:

MODULE SDL3;

IMPORT SYSTEM;

TYPE PCHAR* = POINTER TO VAR- CHAR;
TYPE STRING* = POINTER TO ARRAY OF CHAR;

TYPE Sint32* = SIGNED32;
TYPE Sint64* = SIGNED64;
TYPE Uint8* = UNSIGNED8;
TYPE Uint16* = UNSIGNED16;
TYPE Uint32* = UNSIGNED32;
TYPE Uint64* = UNSIGNED64;

PROCEDURE ^ rand* ["SDL_rand"] (n : Sint32): Sint32;
PROCEDURE ^ randf* ["SDL_randf"] (): REAL32;

END SDL3.

Test.mod:

MODULE Test;

IMPORT SDL3;

PROCEDURE Test;
BEGIN
    TRACE(SDL3.rand(100));
    TRACE(SDL3.rand(100));
    TRACE(SDL3.rand(100));
    TRACE(SDL3.randf());
    TRACE(SDL3.randf());
    TRACE(SDL3.randf());
END Test;

BEGIN
    Test;
END Test.

Commenting out the randf procedure this works, but
with randf this fails to compile with the following error:

obamd64: obemitter.cpp:1010: ECS::Oberon::Emitter::Context::Complex ECS::Oberon::Emitter::Context::EvaluateComplex(const ECS::Oberon::Expression&): Assertion `IsComplex (*expression.type)' failed.
Aborted

This used to work with the previous release of ECS and I created these files to isolate this case.