Compiler crashes with SIGSEGV when using big.integer_from_string in const in module

[gechandesu]

Describe the bug

Using the big.integer_from_string function inside a module as a constant causes a compiler segmentation fault. See reproduction steps below.

Note that the same code but in the main module does not result in an segfault:

// This example works fine
module main

import math.big

struct BigintRange {
	start big.Integer
	end   big.Integer
}

const big_range = BigintRange{
	start: big.integer_from_string('338288524927261089654018896841347694592')!
	end:   big.integer_from_string('338620831926207318622244848606417780735')!
}

fn main() {
	println(big_range)
}

// Output:
// BigintRange{
//     start: 338288524927261089654018896841347694592
//     end: 338620831926207318622244848606417780735
// }

Reproduction Steps

Create a dir e.g. mymod with contents:

// mod.v

module mymod

import math.big

struct BigintRange {
	start big.Integer
	end   big.Integer
}

const range = BigintRange{
	start: big.integer_from_string('338288524927261089654018896841347694592')!
	end:   big.integer_from_string('338620831926207318622244848606417780735')!
}

// mod_test.v

module mymod

fn test_dummy() {
    assert true
}

Then run v test .

---- Testing... ------------------------------------------------------------------------------------------
 FAIL     0.000 ms /home/ge/Code/v/netaddr/issues/mymod/mod_test.v
>> compilation failed:
signal 11: segmentation fault
                                                        | 0x55c52a79648a | /home/ge/.vlang/v(+0x1f348a) 
                                                        | 0x55c52a8a5a7d | /home/ge/.vlang/v(+0x302a7d) 
                                                        | 0x55c52a7d6dda | /home/ge/.vlang/v(+0x233dda) 
                                                        | 0x55c52a7d3057 | /home/ge/.vlang/v(+0x230057) 
                                                        | 0x55c52a8a803d | /home/ge/.vlang/v(+0x30503d) 
                                                        | 0x55c52a897402 | /home/ge/.vlang/v(+0x2f4402) 
                                                        | 0x55c52a897835 | /home/ge/.vlang/v(+0x2f4835) 
                                                        | 0x55c52a8997db | /home/ge/.vlang/v(+0x2f67db) 
                                                        | 0x55c52a8aa8de | /home/ge/.vlang/v(+0x3078de) 
                                                        | 0x55c52a84a4d7 | /home/ge/.vlang/v(+0x2a74d7) 
                                                        | 0x55c52a74255a | /home/ge/.vlang/v(+0x19f55a) 
                                                        | 0x55c52a743f0b | /home/ge/.vlang/v(+0x1a0f0b) 
                                                        | 0x55c52a5ce6c2 | /home/ge/.vlang/v(+0x2b6c2) 
                                                        | 0x55c52a5a6f1d | /home/ge/.vlang/v(+0x3f1d) 
                                                        | 0x7f3833d3839d | /usr/lib/libc.so.6(+0x9439d) 
                                                        | 0x7f3833dbd49c | /usr/lib/libc.so.6(+0x11949c) 

----------------------------------------------------------------------------------------------------------
To reproduce just failure 1 run:    '/home/ge/.vlang/v'  '/home/ge/Code/v/netaddr/issues/mymod/mod_test.v'
Summary for all V _test.v files: 1 failed, 1 total. Elapsed time: 545 ms, on 1 job. Comptime: 491 ms. Runtime: 0 ms.

Expected Behavior

No segfault.

Current Behavior

Compiler crashes with segfault.

Possible Solution

No response

Additional Information/Context

No response

V version

V 0.4.8 1345eac

Environment details (OS name and version, etc.)

V full version: V 0.4.8 5ec9bb5.1345eac
OS: linux, Linux version 6.6.8-arch1-1 (linux@archlinux) (gcc (GCC) 13.2.1 20230801, GNU ld (GNU Binutils) 2.41.0) #1 SMP PREEMPT_DYNAMIC Thu, 21 Dec 2023 19:01:01 +0000
Processor: 16 cpus, 64bit, little endian, 12th Gen Intel(R) Core(TM) i5-1240P

getwd: /home/ge/Code/v/netaddr/issues/mymod
vexe: /home/ge/.vlang/v
vexe mtime: 2024-11-24 11:11:18

vroot: OK, value: /home/ge/.vlang
VMODULES: OK, value: /home/ge/.vmodules
VTMP: OK, value: /tmp/v_1000

Git version: git version 2.46.1
Git vroot status: weekly.2024.47-25-g1345eac5 (3 commit(s) behind V master)
.git/config present: true

CC version: cc (GCC) 14.2.1 20240910
emcc version: N/A
thirdparty/tcc status: thirdparty-linux-amd64 0134e9b9

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_{Huly®: V_0.6-21402}

[JalonSolov]

On Linux, with latest V 0.4.8 e86b526, I get

---- Testing... ----------------------------------------------------------------------------------------------------------------------------
 FAIL     0.000 ms /tmp/mymod/mod_test.v
>> compilation failed:
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:48529: at v__gen__c__Gen_or_block: RUNTIME ERROR: invalid memory access
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:53755: by v__gen__c__Gen_call_expr
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:44089: by v__gen__c__Gen_expr
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:43302: by v__gen__c__Gen_expr_with_cast
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:65222: by v__gen__c__Gen_struct_init_field_default
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:65206: by v__gen__c__Gen_struct_init_field
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:64670: by v__gen__c__Gen_struct_init
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:44429: by v__gen__c__Gen_expr
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:41588: by v__gen__c__Gen_expr_string_surround
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:47460: by v__gen__c__Gen_const_decl_init_later
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:47332: by v__gen__c__Gen_const_decl
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:42702: by v__gen__c__Gen_stmt
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:42503: by v__gen__c__Gen_stmts_with_tmp_var
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:42375: by v__gen__c__Gen_stmts
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:41231: by v__gen__c__Gen_gen_file
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:41172: by v__gen__c__cgen_process_one_file_cb
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:49096: by sync__pool__process_in_thread
/tmp/v_1000/v2.01JDF4XH4TYWH2B3NJ3XASGV84.tmp.c:12218: by sync__pool__process_in_thread_thread_wrapper
0x7a4420a2239d: by ???
0x7a4420aa749c: by ???

--------------------------------------------------------------------------------------------------------------------------------------------
To reproduce just failure 1 run:    '/home/jalon/git/v/v'  '/tmp/mymod/mod_test.v'
Summary for all V _test.v files: 1 failed, 1 total. Elapsed time: 552 ms, on 1 job. Comptime: 491 ms. Runtime: 0 ms.