V compiler error when adding error processing using or {<expression>} #21556
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Unit: cgen
Bugs/feature requests, that are related to the default C generating backend.
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A simple version of the issue test code// Cut - extract sections from each line of input
const app_name = 'cut'
struct Args {
bytes [2]int
character [2]int
file_args []string
}
fn main() {
make_args()
}
fn cut(lines []string, arg Args) []string {
return []string{}
}
fn make_args() Args {
// translate args
bytes := '-a 1 -b';
file_args := ['a.txt', 'b.log'];
return Args{
bytes: get_range(bytes) or { panic('error!'); }
file_args: file_args
}
}
// range values interpreted as follows:
// [s>=0, e>0] simple range
// [s>=0, e==-1] from s to end of string
// [s>=0, e==0] s'th byte only
fn get_range(arg string) ![2]int {
mut idx := 0
mut s := ''
mut e := ''
err_msg := 'invalid range syntax (--help for more info)'
for idx < arg.len && arg[idx].is_digit() {
s += arg[idx].ascii_str()
idx += 1
}
start := if s.len > 0 { s.int() } else { 0 }
if idx == arg.len && start != -1 {
return [start, 0]!
}
if arg[idx] != `-` {
return error(err_msg)
}
idx += 1
for idx < arg.len && arg[idx].is_digit() {
e += arg[idx].ascii_str()
idx += 1
}
if idx != arg.len {
return error(err_msg)
}
end := if e.len > 0 { e.int() } else { -1 }
return [start, end]!
}Do compile by using v 0.4.6>v cut.v
.../AppData/Local/Temp/v_0/cut.01HYM4P03DXXPP9FCJQ8VQBNZP.tmp.c:13228: warning: cast between pointer and integer of different size
.../AppData/Local/Temp/v_0/cut.01HYM4P03DXXPP9FCJQ8VQBNZP.tmp.c:13228: error: struct/union type expected
...
==================
(Use `v -cg` to print the entire error message)
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 .v doctor>v doctor
V full version: V 0.4.6 c412b9f.736067d
OS: windows, Microsoft Windows 10 רҵ v19042 64 λ
Processor: 4 cpus, 64bit, little endian,
getwd: ...\vlang\bug
vexe: ...\v\v.exe
vexe mtime: 2024-05-20 18:12:48
vroot: OK, value: ...
VMODULES: OK, value: ...\.vmodules
VTMP: OK, value: ...\AppData\Local\Temp\v_0
Git version: git version 2.33.1.windows.1
Git vroot status: Error: fatal: not a git repository (or any of the parent directories): .git
.git/config present: false
CC version: Error: 'cc' is not recognized as an internal or external command,
operable program or batch file.
thirdparty/tcc: N/A |
felipensp
added
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Unit: cgen
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V doctor:
What did you do?
v -g -o vdbg cmd/v && vdbg cut.vSee attached file
cut.vWhat did you expect to see?
Successful compilation
What did you see instead?
cut.v
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