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Merge pull request #6062 from JRMurr/div-0-should-crash

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Update zig `@panic` calls to `roc_panic` for numeric errors
This commit is contained in:
Brendan Hansknecht 2023-12-05 12:28:47 -08:00 committed by GitHub
commit e336aa525c
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11 changed files with 71 additions and 47 deletions
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27
crates/compiler/builtins/bitcode/src/dec.zig
View File

@ -252,7 +252,6 @@ pub const RocDec = extern struct {
if (answer.has_overflowed) { if (answer.has_overflowed) {
roc_panic("Decimal addition overflowed!", 0); roc_panic("Decimal addition overflowed!", 0);
unreachable;
} else { } else {
return answer.value; return answer.value;
} }
@ -283,7 +282,6 @@ pub const RocDec = extern struct {
if (answer.has_overflowed) { if (answer.has_overflowed) {
roc_panic("Decimal subtraction overflowed!", 0); roc_panic("Decimal subtraction overflowed!", 0);
unreachable;
} else { } else {
return answer.value; return answer.value;
} }
@ -347,7 +345,6 @@ pub const RocDec = extern struct {
if (answer.has_overflowed) { if (answer.has_overflowed) {
roc_panic("Decimal multiplication overflowed!", 0); roc_panic("Decimal multiplication overflowed!", 0);
unreachable;
} else { } else {
return answer.value; return answer.value;
} }
@ -369,7 +366,7 @@ pub const RocDec = extern struct {
// (n / 0) is an error // (n / 0) is an error
if (denominator_i128 == 0) { if (denominator_i128 == 0) {
@panic("TODO runtime exception for dividing by 0!"); roc_panic("Decimal division by 0!", 0);
} }
// If they're both negative, or if neither is negative, the final answer // If they're both negative, or if neither is negative, the final answer
@ -397,7 +394,7 @@ pub const RocDec = extern struct {
if (denominator_i128 == one_point_zero_i128) { if (denominator_i128 == one_point_zero_i128) {
return self; return self;
} else { } else {
@panic("TODO runtime exception for overflow when dividing!"); roc_panic("Decimal division overflow in numerator!", 0);
} }
}; };
const numerator_u128 = @as(u128, @intCast(numerator_abs_i128)); const numerator_u128 = @as(u128, @intCast(numerator_abs_i128));
@ -410,7 +407,7 @@ pub const RocDec = extern struct {
if (numerator_i128 == one_point_zero_i128) { if (numerator_i128 == one_point_zero_i128) {
return other; return other;
} else { } else {
@panic("TODO runtime exception for overflow when dividing!"); roc_panic("Decimal division overflow in denominator!", 0);
} }
}; };
const denominator_u128 = @as(u128, @intCast(denominator_abs_i128)); const denominator_u128 = @as(u128, @intCast(denominator_abs_i128));
@ -422,7 +419,7 @@ pub const RocDec = extern struct {
if (answer.hi == 0 and answer.lo <= math.maxInt(i128)) { if (answer.hi == 0 and answer.lo <= math.maxInt(i128)) {
unsigned_answer = @as(i128, @intCast(answer.lo)); unsigned_answer = @as(i128, @intCast(answer.lo));
} else { } else {
@panic("TODO runtime exception for overflow when dividing!"); roc_panic("Decimal division overflow!", 0);
} }
return RocDec{ .num = if (is_answer_negative) -unsigned_answer else unsigned_answer }; return RocDec{ .num = if (is_answer_negative) -unsigned_answer else unsigned_answer };
@ -636,7 +633,7 @@ fn mul_and_decimalize(a: u128, b: u128) i128 {
const d = answer[0]; const d = answer[0];
if (overflowed == 1) { if (overflowed == 1) {
@panic("TODO runtime exception for overflow!"); roc_panic("Decimal multiplication overflow!", 0);
} }
// Final 512bit value is d, c, b, a // Final 512bit value is d, c, b, a
@ -1216,7 +1213,7 @@ pub fn fromF64C(arg: f64) callconv(.C) i128 {
if (@call(.always_inline, RocDec.fromF64, .{arg})) |dec| { if (@call(.always_inline, RocDec.fromF64, .{arg})) |dec| {
return dec.num; return dec.num;
} else { } else {
@panic("TODO runtime exception failing convert f64 to RocDec"); roc_panic("Decimal conversion from f64 failed!", 0);
} }
} }
@ -1225,7 +1222,7 @@ pub fn fromF32C(arg_f32: f32) callconv(.C) i128 {
if (@call(.always_inline, RocDec.fromF64, .{arg_f64})) |dec| { if (@call(.always_inline, RocDec.fromF64, .{arg_f64})) |dec| {
return dec.num; return dec.num;
} else { } else {
@panic("TODO runtime exception failing convert f64 to RocDec"); roc_panic("Decimal conversion from f32!", 0);
} }
} }
@ -1240,7 +1237,7 @@ pub fn exportFromInt(comptime T: type, comptime name: []const u8) void {
const answer = @mulWithOverflow(this, RocDec.one_point_zero_i128); const answer = @mulWithOverflow(this, RocDec.one_point_zero_i128);
if (answer[1] == 1) { if (answer[1] == 1) {
@panic("TODO runtime exception failing convert integer to RocDec"); roc_panic("Decimal conversion from Integer failed!", 0);
} else { } else {
return answer[0]; return answer[0];
} }
@ -1266,11 +1263,15 @@ pub fn neqC(arg1: RocDec, arg2: RocDec) callconv(.C) bool {
} }
pub fn negateC(arg: RocDec) callconv(.C) i128 { pub fn negateC(arg: RocDec) callconv(.C) i128 {
return if (@call(.always_inline, RocDec.negate, .{arg})) |dec| dec.num else @panic("TODO overflow for negating RocDec"); return if (@call(.always_inline, RocDec.negate, .{arg})) |dec| dec.num else {
roc_panic("Decimal negation overflow!", 0);
};
} }
pub fn absC(arg: RocDec) callconv(.C) i128 { pub fn absC(arg: RocDec) callconv(.C) i128 {
const result = @call(.always_inline, RocDec.abs, .{arg}) catch @panic("TODO overflow for calling absolute value on RocDec"); const result = @call(.always_inline, RocDec.abs, .{arg}) catch {
roc_panic("Decimal absolute value overflow!", 0);
};
return result.num; return result.num;
} }

13
crates/compiler/builtins/bitcode/src/num.zig
View File

@ -233,7 +233,9 @@ pub fn exportCeiling(comptime F: type, comptime T: type, comptime name: []const
pub fn exportDivCeil(comptime T: type, comptime name: []const u8) void { pub fn exportDivCeil(comptime T: type, comptime name: []const u8) void {
comptime var f = struct { comptime var f = struct {
fn func(a: T, b: T) callconv(.C) T { fn func(a: T, b: T) callconv(.C) T {
return math.divCeil(T, a, b) catch @panic("TODO runtime exception for dividing by 0!"); return math.divCeil(T, a, b) catch {
roc_panic("Integer division by 0!", 0);
};
} }
}.func; }.func;
@export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong }); @export(f, .{ .name = name ++ @typeName(T), .linkage = .Strong });
@ -379,8 +381,7 @@ pub fn exportAddOrPanic(comptime T: type, comptime name: []const u8) void {
fn func(self: T, other: T) callconv(.C) T { fn func(self: T, other: T) callconv(.C) T {
const result = addWithOverflow(T, self, other); const result = addWithOverflow(T, self, other);
if (result.has_overflowed) { if (result.has_overflowed) {
roc_panic("integer addition overflowed!", 0); roc_panic("Integer addition overflowed!", 0);
unreachable;
} else { } else {
return result.value; return result.value;
} }
@ -437,8 +438,7 @@ pub fn exportSubOrPanic(comptime T: type, comptime name: []const u8) void {
fn func(self: T, other: T) callconv(.C) T { fn func(self: T, other: T) callconv(.C) T {
const result = subWithOverflow(T, self, other); const result = subWithOverflow(T, self, other);
if (result.has_overflowed) { if (result.has_overflowed) {
roc_panic("integer subtraction overflowed!", 0); roc_panic("Integer subtraction overflowed!", 0);
unreachable;
} else { } else {
return result.value; return result.value;
} }
@ -622,8 +622,7 @@ pub fn exportMulOrPanic(comptime T: type, comptime W: type, comptime name: []con
fn func(self: T, other: T) callconv(.C) T { fn func(self: T, other: T) callconv(.C) T {
const result = @call(.always_inline, mulWithOverflow, .{ T, W, self, other }); const result = @call(.always_inline, mulWithOverflow, .{ T, W, self, other });
if (result.has_overflowed) { if (result.has_overflowed) {
roc_panic("integer multiplication overflowed!", 0); roc_panic("Integer multiplication overflowed!", 0);
unreachable;
} else { } else {
return result.value; return result.value;
} }

6
crates/compiler/builtins/bitcode/src/panic.zig
View File

@ -2,14 +2,14 @@ const std = @import("std");
const RocStr = @import("str.zig").RocStr; const RocStr = @import("str.zig").RocStr;
// Signals to the host that the program has panicked // Signals to the host that the program has panicked
extern fn roc_panic(msg: *const RocStr, tag_id: u32) callconv(.C) void; extern fn roc_panic(msg: *const RocStr, tag_id: u32) callconv(.C) noreturn;
pub fn panic_help(msg: []const u8, tag_id: u32) void { pub fn panic_help(msg: []const u8, tag_id: u32) noreturn {
var str = RocStr.init(msg.ptr, msg.len); var str = RocStr.init(msg.ptr, msg.len);
roc_panic(&str, tag_id); roc_panic(&str, tag_id);
} }
// must export this explicitly because right now it is not used from zig code // must export this explicitly because right now it is not used from zig code
pub fn panic(msg: *const RocStr, alignment: u32) callconv(.C) void { pub fn panic(msg: *const RocStr, alignment: u32) callconv(.C) noreturn {
return roc_panic(msg, alignment); return roc_panic(msg, alignment);
} }

16
crates/compiler/gen_llvm/src/llvm/lowlevel.rs
View File

@ -1535,7 +1535,7 @@ fn build_int_binop<'ctx>(
) )
.into_struct_value(); .into_struct_value();
throw_on_overflow(env, parent, result, "integer addition overflowed!") throw_on_overflow(env, parent, result, "Integer addition overflowed!")
} }
NumAddWrap => bd.new_build_int_add(lhs, rhs, "add_int_wrap").into(), NumAddWrap => bd.new_build_int_add(lhs, rhs, "add_int_wrap").into(),
NumAddChecked => { NumAddChecked => {
@ -1566,7 +1566,7 @@ fn build_int_binop<'ctx>(
) )
.into_struct_value(); .into_struct_value();
throw_on_overflow(env, parent, result, "integer subtraction overflowed!") throw_on_overflow(env, parent, result, "Integer subtraction overflowed!")
} }
NumSubWrap => bd.new_build_int_sub(lhs, rhs, "sub_int").into(), NumSubWrap => bd.new_build_int_sub(lhs, rhs, "sub_int").into(),
NumSubChecked => { NumSubChecked => {
@ -1597,7 +1597,7 @@ fn build_int_binop<'ctx>(
) )
.into_struct_value(); .into_struct_value();
throw_on_overflow(env, parent, result, "integer multiplication overflowed!") throw_on_overflow(env, parent, result, "Integer multiplication overflowed!")
} }
NumMulWrap => bd.new_build_int_mul(lhs, rhs, "mul_int").into(), NumMulWrap => bd.new_build_int_mul(lhs, rhs, "mul_int").into(),
NumMulSaturated => call_bitcode_fn( NumMulSaturated => call_bitcode_fn(
@ -2350,7 +2350,7 @@ fn build_dec_binop<'a, 'ctx>(
bitcode::DEC_ADD_WITH_OVERFLOW, bitcode::DEC_ADD_WITH_OVERFLOW,
lhs, lhs,
rhs, rhs,
"decimal addition overflowed", "Decimal addition overflowed",
), ),
NumSub => build_dec_binop_throw_on_overflow( NumSub => build_dec_binop_throw_on_overflow(
env, env,
@ -2358,7 +2358,7 @@ fn build_dec_binop<'a, 'ctx>(
bitcode::DEC_SUB_WITH_OVERFLOW, bitcode::DEC_SUB_WITH_OVERFLOW,
lhs, lhs,
rhs, rhs,
"decimal subtraction overflowed", "Decimal subtraction overflowed",
), ),
NumMul => build_dec_binop_throw_on_overflow( NumMul => build_dec_binop_throw_on_overflow(
env, env,
@ -2366,7 +2366,7 @@ fn build_dec_binop<'a, 'ctx>(
bitcode::DEC_MUL_WITH_OVERFLOW, bitcode::DEC_MUL_WITH_OVERFLOW,
lhs, lhs,
rhs, rhs,
"decimal multiplication overflowed", "Decimal multiplication overflowed",
), ),
NumDivFrac => dec_binop_with_unchecked(env, bitcode::DEC_DIV, lhs, rhs), NumDivFrac => dec_binop_with_unchecked(env, bitcode::DEC_DIV, lhs, rhs),
@ -2659,7 +2659,7 @@ fn int_neg_raise_on_overflow<'ctx>(
throw_internal_exception( throw_internal_exception(
env, env,
parent, parent,
"integer negation overflowed because its argument is the minimum value", "Integer negation overflowed because its argument is the minimum value",
); );
builder.position_at_end(else_block); builder.position_at_end(else_block);
@ -2690,7 +2690,7 @@ fn int_abs_raise_on_overflow<'ctx>(
throw_internal_exception( throw_internal_exception(
env, env,
parent, parent,
"integer absolute overflowed because its argument is the minimum value", "Integer absolute overflowed because its argument is the minimum value",
); );
builder.position_at_end(else_block); builder.position_at_end(else_block);

4
crates/compiler/gen_wasm/src/low_level.rs
View File

@ -1382,7 +1382,7 @@ impl<'a> LowLevelCall<'a> {
} }
NumAbs => { NumAbs => {
const PANIC_MSG: &str = const PANIC_MSG: &str =
"integer absolute overflowed because its argument is the minimum value"; "Integer absolute overflowed because its argument is the minimum value";
self.load_args(backend); self.load_args(backend);
@ -1446,7 +1446,7 @@ impl<'a> LowLevelCall<'a> {
} }
NumNeg => { NumNeg => {
const PANIC_MSG: &str = const PANIC_MSG: &str =
"integer negation overflowed because its argument is the minimum value"; "Integer negation overflowed because its argument is the minimum value";
self.load_args(backend); self.load_args(backend);
match CodeGenNumType::from(self.ret_layout) { match CodeGenNumType::from(self.ret_layout) {

2
crates/compiler/test_gen/src/gen_list.rs
View File

@ -2934,7 +2934,7 @@ fn list_map_with_index() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer addition overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer addition overflowed!"#)]
fn cleanup_because_exception() { fn cleanup_because_exception() {
assert_evals_to!( assert_evals_to!(
indoc!( indoc!(

38
crates/compiler/test_gen/src/gen_num.rs
View File

@ -575,7 +575,7 @@ fn various_sized_abs() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic( #[should_panic(
expected = r#"Roc failed with message: "integer absolute overflowed because its argument is the minimum value"# expected = r#"Roc failed with message: "Integer absolute overflowed because its argument is the minimum value"#
)] )]
fn abs_min_int_overflow() { fn abs_min_int_overflow() {
assert_evals_to!( assert_evals_to!(
@ -799,6 +799,26 @@ fn gen_div_checked_by_zero_dec() {
); );
} }
#[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "Decimal division by 0!"#)]
fn gen_div_dec_by_zero() {
assert_evals_to!("1dec / 0", RocDec::from_str_to_i128_unsafe("-1"), i128);
}
#[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "Integer division by 0!"#)]
fn gen_div_ceil_by_zero() {
assert_evals_to!(
r#"
Num.divCeil 5 0 == 0
"#,
false,
bool
);
}
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-dev", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-dev", feature = "gen-wasm"))]
fn gen_int_eq() { fn gen_int_eq() {
@ -1581,7 +1601,7 @@ fn int_negate() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic( #[should_panic(
expected = r#"Roc failed with message: "integer negation overflowed because its argument is the minimum value"# expected = r#"Roc failed with message: "Integer negation overflowed because its argument is the minimum value"#
)] )]
fn neg_min_int_overflow() { fn neg_min_int_overflow() {
assert_evals_to!( assert_evals_to!(
@ -1809,7 +1829,7 @@ fn atan() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer addition overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer addition overflowed!"#)]
fn int_add_overflow() { fn int_add_overflow() {
assert_evals_to!( assert_evals_to!(
indoc!( indoc!(
@ -1884,7 +1904,7 @@ fn float_add_overflow() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer subtraction overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer subtraction overflowed!"#)]
fn int_sub_overflow() { fn int_sub_overflow() {
assert_evals_to!("-9_223_372_036_854_775_808 - 1", 0, i64); assert_evals_to!("-9_223_372_036_854_775_808 - 1", 0, i64);
} }
@ -1969,7 +1989,7 @@ fn float_sub_checked() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer multiplication overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer multiplication overflowed!"#)]
fn int_positive_mul_overflow() { fn int_positive_mul_overflow() {
assert_evals_to!( assert_evals_to!(
indoc!( indoc!(
@ -1984,7 +2004,7 @@ fn int_positive_mul_overflow() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer multiplication overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer multiplication overflowed!"#)]
fn int_negative_mul_overflow() { fn int_negative_mul_overflow() {
assert_evals_to!( assert_evals_to!(
indoc!( indoc!(
@ -3907,21 +3927,21 @@ fn num_abs_diff_float() {
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer subtraction overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer subtraction overflowed!"#)]
fn num_abs_max_overflow() { fn num_abs_max_overflow() {
assert_evals_to!(r#"Num.absDiff Num.maxI64 -1"#, 0, i64); assert_evals_to!(r#"Num.absDiff Num.maxI64 -1"#, 0, i64);
} }
#[test] #[test]
#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))] #[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
#[should_panic(expected = r#"Roc failed with message: "integer subtraction overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer subtraction overflowed!"#)]
fn num_abs_int_min_overflow() { fn num_abs_int_min_overflow() {
assert_evals_to!(r#"Num.absDiff Num.minI64 0"#, 0, i64); assert_evals_to!(r#"Num.absDiff Num.minI64 0"#, 0, i64);
} }
#[test] #[test]
#[cfg(feature = "gen-llvm")] #[cfg(feature = "gen-llvm")]
#[should_panic(expected = r#"Roc failed with message: "integer subtraction overflowed!"#)] #[should_panic(expected = r#"Roc failed with message: "Integer subtraction overflowed!"#)]
fn num_abs_large_bits_min_overflow() { fn num_abs_large_bits_min_overflow() {
assert_evals_to!(r#"Num.absDiff Num.minI128 0"#, 0, i128); assert_evals_to!(r#"Num.absDiff Num.minI128 0"#, 0, i128);
} }

2
crates/lang_srv/debug_server.sh
View File

@ -1,4 +1,4 @@
#!/bin/bash #!/usr/bin/bash
SCRIPT_DIR=$(cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd) SCRIPT_DIR=$(cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd)
${SCRIPT_DIR}/../../target/debug/roc_ls "$@" 2> /tmp/roc_ls.err ${SCRIPT_DIR}/../../target/debug/roc_ls "$@" 2> /tmp/roc_ls.err

5
crates/repl_wasm/README.md
View File

@ -14,13 +14,14 @@ crates/repl_wasm/build-www.sh
### 2. Make symlinks to the generated Wasm and JS ### 2. Make symlinks to the generated Wasm and JS
```bash ```bash
cd www/public mkdir -p www/public/repl
cd www/public/repl
ln -s ../../../crates/repl_wasm/build/roc_repl_wasm_bg.wasm ln -s ../../../crates/repl_wasm/build/roc_repl_wasm_bg.wasm
ln -s ../../../crates/repl_wasm/build/roc_repl_wasm.js ln -s ../../../crates/repl_wasm/build/roc_repl_wasm.js
``` ```
These symlinks are ignored by Git. These symlinks are ignored by Git.
> This is a bit different from the production build, where we copy all the files to `www/build/`. But for development, it's convenient to have just one copy of files like `www/public/repl.js`. You can make changes, reload your browser to see them, and commit them to Git, without getting mixed up between different copies of the same file. > This is a bit different from the production build, where we copy all the files to `www/build/`. But for development, it's convenient to have just one copy of files like `www/public/repl/repl.js`. You can make changes, reload your browser to see them, and commit them to Git, without getting mixed up between different copies of the same file.
### 3. Run a local HTTP server ### 3. Run a local HTTP server

3
flake.nix
View File

@ -91,6 +91,7 @@
wasm-pack # for repl_wasm wasm-pack # for repl_wasm
jq # used in several bash scripts jq # used in several bash scripts
cargo-nextest # used to give more info for segfaults for gen tests cargo-nextest # used to give more info for segfaults for gen tests
zls # zig language server
]); ]);
aliases = '' aliases = ''
@ -135,7 +136,7 @@
# You can build this package (the roc CLI) with the `nix build` command. # You can build this package (the roc CLI) with the `nix build` command.
packages = { packages = {
default = rocBuild.roc-cli; default = rocBuild.roc-cli;
# all rust crates in workspace.members of Cargo.toml # all rust crates in workspace.members of Cargo.toml
full = rocBuild.roc-full; full = rocBuild.roc-full;
# only the CLI crate = executable provided in nightly releases # only the CLI crate = executable provided in nightly releases

2
www/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
# ignore a symlink to the wasm repl code
public/repl