C compilation error in nested array declaration

[Linklancien]

Describe the bug

C compilation error

Reproduction Steps

fn main(){
	map_test := [][][]int{len: 10, init: 
		if index == 0 || index == 9{
			[][]int{len: 10, init:[1]}
		}
		else{
			[][]int{len: 10, init:
					if index == 0 || index == 9{[1]}else{[]}
				}
		}
	}
}

Expected Behavior

Suppose to create triple nest array [][][] using nested conditions

Current Behavior

C compilation error

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.9 81fd0db.a1f7213

Environment details (OS name and version, etc.)

windows, Microsoft Windows 10 Pro 19045 64-bit

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[huly-for-github]

Connected to Huly®: V_0.6-22226

[jorgeluismireles]

If I understood your idea, I think here is a workaround

fn main() {
	for r in works() {
		println(r)
	}
	//for r in fails() {
	//	println(r)
	//}
}

fn works() [][][]int {
	return [][][]int{ len: 10, init: if index == 0 || index == 9 {
			[][]int{ len:10, init:[1] }
		} else {
			[ []int{ len:1, init:1 }, []int{}, []int{}, []int{}, []int{}, []int{}, []int{}, []int{}, []int{}, []int{ len:1, init:1 } ]
		}
	}
}

fn fails() [][][]int {
	return [][][]int{ len: 10, init: if index == 0 || index == 9 {
			[][]int{ len: 10, init:[1] }
		} else{
			[][]int{ len: 10, init: if index == 0 || index == 9 {
					[1]
				} else {
					[]
				}
			}
		}
	}
}

produces:

[[1], [1], [1], [1], [1], [1], [1], [1], [1], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [], [], [], [], [], [], [], [], [1]]
[[1], [1], [1], [1], [1], [1], [1], [1], [1], [1]]

If I uncomment your code I set in function fn fails() I also got a C error:

================== C compilation error (from tcc): ==============
cc: /tmp/v_1000/23818_workaround.01JN2H576VD517T05HQ994S0B6.tmp.c:6955: error: ')' expected (got "_t3")
=================================================================
(You can pass `-cg`, or `-show-c-output` as well, to print all the C error messages).
builder error: 
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

I wonder if special variable index could be used twice

[jorgeluismireles]

With -show-c-output:

$ v -show-c-output run bugs/23818_workaround.v 
======== Output of the C Compiler (/home/jorge/v/thirdparty/tcc/tcc.exe) ========
/tmp/v_1000/23818_workaround.01JN2HFFAKAA5RGQWGT0NRM877.tmp.c:6955: error: ')' expected (got "_t3")
=================================================================================
======== Output of the C Compiler (cc) ========
/tmp/v_1000/23818_workaround.01JN2HFFAKAA5RGQWGT0NRM877.tmp.c: In function ‘main__fails’:
/tmp/v_1000/23818_workaround.01JN2HFFAKAA5RGQWGT0NRM877.tmp.c:6955:256: error: expected ‘)’ before ‘_t3’
 6955 |                         *pelem = (index == 0 || index == 9 ? (__new_array_with_array_default(10, 0, sizeof(Array_int), (Array_int[]){new_array_from_c_array_noscan(1, 1, sizeof(int), _MOV((int[1]){1}))}[0], 0)) : (                           Array_Array_int _t3 =__new_array_with_array_default(10, 0, sizeof(Array_int), (Array_int[]){__new_array_noscan(0, 0, sizeof(int))}[0], 0);
      |                                                                                                                                                                                                                     ~                                          ^~~~
      |                                                                                                                                                                                                                                                                )
/tmp/v_1000/23818_workaround.01JN2HFFAKAA5RGQWGT0NRM877.tmp.c:6963:38: error: expected expression before ‘)’ token
 6963 |                                  _t3));
      |                                      ^
===============================================
No such file or directory; code: 2