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Sema: analyzeInlineCallArg needs a block for the arg and the param

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This commit is contained in:
Veikka Tuominen 2022-07-25 13:48:21 +03:00
parent 370793a36b
commit 2f34d06d01
3 changed files with 58 additions and 22 deletions
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2
src/Module.zig
View file

@ -5940,7 +5940,9 @@ pub fn argSrc(
gpa: Allocator,
decl: *Decl,
arg_i: usize,
bound_arg_src: ?LazySrcLoc,
) LazySrcLoc {
if (arg_i == 0 and bound_arg_src != null) return bound_arg_src.?;
@setCold(true);
const tree = decl.getFileScope().getTree(gpa) catch |err| {
// In this case we emit a warning + a less precise source location.

54
src/Sema.zig
View file

@ -5353,7 +5353,9 @@ fn zirCall(
const func_type = sema.typeOf(func);
// Desugar bound functions here
var bound_arg_src: ?LazySrcLoc = null;
if (func_type.tag() == .bound_fn) {
bound_arg_src = func_src;
const bound_func = try sema.resolveValue(block, .unneeded, func, undefined);
const bound_data = &bound_func.cast(Value.Payload.BoundFn).?.data;
func = bound_data.func_inst;
@ -5369,7 +5371,7 @@ fn zirCall(
}
}
return sema.analyzeCall(block, func, func_src, call_src, modifier, ensure_result_used, resolved_args);
return sema.analyzeCall(block, func, func_src, call_src, modifier, ensure_result_used, resolved_args, bound_arg_src);
}
const GenericCallAdapter = struct {
@ -5438,6 +5440,7 @@ fn analyzeCall(
modifier: std.builtin.CallOptions.Modifier,
ensure_result_used: bool,
uncasted_args: []const Air.Inst.Ref,
bound_arg_src: ?LazySrcLoc,
) CompileError!Air.Inst.Ref {
const mod = sema.mod;
@ -5532,6 +5535,7 @@ fn analyzeCall(
ensure_result_used,
uncasted_args,
call_tag,
bound_arg_src,
)) |some| {
return some;
} else |err| switch (err) {
@ -5654,6 +5658,7 @@ fn analyzeCall(
var arg_i: usize = 0;
for (fn_info.param_body) |inst| {
sema.analyzeInlineCallArg(
block,
&child_block,
.unneeded,
inst,
@ -5665,12 +5670,13 @@ fn analyzeCall(
memoized_call_key,
) catch |err| switch (err) {
error.NeededSourceLocation => {
sema.inst_map.clearRetainingCapacity();
const decl = sema.mod.declPtr(block.src_decl);
child_block.src_decl = block.src_decl;
try sema.analyzeInlineCallArg(
// Intentionally use the wrong block here since we know it's
// going to fail and `argSrc` is relative to `block.src_decl`.
block,
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, arg_i),
&child_block,
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, arg_i, bound_arg_src),
inst,
new_fn_info,
&arg_i,
@ -5832,7 +5838,7 @@ fn analyzeCall(
const decl = sema.mod.declPtr(block.src_decl);
_ = try sema.analyzeCallArg(
block,
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, i),
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, i, bound_arg_src),
param_ty,
uncasted_arg,
);
@ -5873,7 +5879,8 @@ fn analyzeCall(
fn analyzeInlineCallArg(
sema: *Sema,
block: *Block,
arg_block: *Block,
param_block: *Block,
arg_src: LazySrcLoc,
inst: Zir.Inst.Index,
new_fn_info: Type.Payload.Function.Data,
@ -5892,19 +5899,19 @@ fn analyzeInlineCallArg(
const param_src = pl_tok.src();
const extra = sema.code.extraData(Zir.Inst.Param, pl_tok.payload_index);
const param_body = sema.code.extra[extra.end..][0..extra.data.body_len];
const param_ty_inst = try sema.resolveBody(block, param_body, inst);
const param_ty = try sema.analyzeAsType(block, param_src, param_ty_inst);
const param_ty_inst = try sema.resolveBody(param_block, param_body, inst);
const param_ty = try sema.analyzeAsType(param_block, param_src, param_ty_inst);
new_fn_info.param_types[arg_i.*] = param_ty;
const uncasted_arg = uncasted_args[arg_i.*];
if (try sema.typeRequiresComptime(block, arg_src, param_ty)) {
_ = try sema.resolveConstMaybeUndefVal(block, arg_src, uncasted_arg, "argument to parameter with comptime only type must be comptime known");
if (try sema.typeRequiresComptime(arg_block, arg_src, param_ty)) {
_ = try sema.resolveConstMaybeUndefVal(arg_block, arg_src, uncasted_arg, "argument to parameter with comptime only type must be comptime known");
}
const casted_arg = try sema.coerce(block, param_ty, uncasted_arg, arg_src);
const casted_arg = try sema.coerce(arg_block, param_ty, uncasted_arg, arg_src);
try sema.inst_map.putNoClobber(sema.gpa, inst, casted_arg);
if (is_comptime_call) {
// TODO explain why function is being called at comptime
const arg_val = try sema.resolveConstMaybeUndefVal(block, arg_src, casted_arg, "argument to function being called at comptime must be comptime known");
const arg_val = try sema.resolveConstMaybeUndefVal(arg_block, arg_src, casted_arg, "argument to function being called at comptime must be comptime known");
switch (arg_val.tag()) {
.generic_poison, .generic_poison_type => {
// This function is currently evaluated as part of an as-of-yet unresolvable
@ -5915,7 +5922,7 @@ fn analyzeInlineCallArg(
// Needed so that lazy values do not trigger
// assertion due to type not being resolved
// when the hash function is called.
try sema.resolveLazyValue(block, arg_src, arg_val);
try sema.resolveLazyValue(arg_block, arg_src, arg_val);
},
}
should_memoize.* = should_memoize.* and !arg_val.canMutateComptimeVarState();
@ -5935,7 +5942,7 @@ fn analyzeInlineCallArg(
if (is_comptime_call) {
// TODO explain why function is being called at comptime
const arg_val = try sema.resolveConstMaybeUndefVal(block, arg_src, uncasted_arg, "argument to function being called at comptime must be comptime known");
const arg_val = try sema.resolveConstMaybeUndefVal(arg_block, arg_src, uncasted_arg, "argument to function being called at comptime must be comptime known");
switch (arg_val.tag()) {
.generic_poison, .generic_poison_type => {
// This function is currently evaluated as part of an as-of-yet unresolvable
@ -5946,7 +5953,7 @@ fn analyzeInlineCallArg(
// Needed so that lazy values do not trigger
// assertion due to type not being resolved
// when the hash function is called.
try sema.resolveLazyValue(block, arg_src, arg_val);
try sema.resolveLazyValue(arg_block, arg_src, arg_val);
},
}
should_memoize.* = should_memoize.* and !arg_val.canMutateComptimeVarState();
@ -6011,6 +6018,7 @@ fn instantiateGenericCall(
ensure_result_used: bool,
uncasted_args: []const Air.Inst.Ref,
call_tag: Air.Inst.Tag,
bound_arg_src: ?LazySrcLoc,
) CompileError!Air.Inst.Ref {
const mod = sema.mod;
const gpa = sema.gpa;
@ -6070,7 +6078,7 @@ fn instantiateGenericCall(
const arg_val = sema.analyzeGenericCallArgVal(block, .unneeded, uncasted_args[i]) catch |err| switch (err) {
error.NeededSourceLocation => {
const decl = sema.mod.declPtr(block.src_decl);
const arg_src = Module.argSrc(call_src.node_offset.x, sema.gpa, decl, i);
const arg_src = Module.argSrc(call_src.node_offset.x, sema.gpa, decl, i, bound_arg_src);
_ = try sema.analyzeGenericCallArgVal(block, arg_src, uncasted_args[i]);
return error.AnalysisFail;
},
@ -6392,7 +6400,7 @@ fn instantiateGenericCall(
const decl = sema.mod.declPtr(block.src_decl);
_ = try sema.analyzeGenericCallArg(
block,
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, total_i),
Module.argSrc(call_src.node_offset.x, sema.gpa, decl, total_i, bound_arg_src),
uncasted_args[total_i],
comptime_args[total_i],
runtime_args,
@ -14263,7 +14271,7 @@ fn analyzeRet(
const ptr_stack_trace_ty = try Type.Tag.optional_single_mut_pointer.create(sema.arena, stack_trace_ty);
const err_return_trace = try block.addTy(.err_return_trace, ptr_stack_trace_ty);
const args: [1]Air.Inst.Ref = .{err_return_trace};
_ = try sema.analyzeCall(block, return_err_fn, src, src, .never_inline, false, &args);
_ = try sema.analyzeCall(block, return_err_fn, src, src, .never_inline, false, &args, null);
}
try sema.resolveTypeLayout(block, src, sema.fn_ret_ty);
@ -17880,7 +17888,9 @@ fn zirBuiltinCall(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError
var resolved_args: []Air.Inst.Ref = undefined;
// Desugar bound functions here
var bound_arg_src: ?LazySrcLoc = null;
if (sema.typeOf(func).tag() == .bound_fn) {
bound_arg_src = func_src;
const bound_func = try sema.resolveValue(block, .unneeded, func, undefined);
const bound_data = &bound_func.cast(Value.Payload.BoundFn).?.data;
func = bound_data.func_inst;
@ -17896,7 +17906,7 @@ fn zirBuiltinCall(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError
}
}
const ensure_result_used = extra.flags.ensure_result_used;
return sema.analyzeCall(block, func, func_src, call_src, modifier, ensure_result_used, resolved_args);
return sema.analyzeCall(block, func, func_src, call_src, modifier, ensure_result_used, resolved_args, bound_arg_src);
}
fn zirFieldParentPtr(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Air.Inst.Ref {
@ -19182,7 +19192,7 @@ fn panicWithMsg(
Value.@"null",
);
const args: [2]Air.Inst.Ref = .{ msg_inst, null_stack_trace };
_ = try sema.analyzeCall(block, panic_fn, src, src, .auto, false, &args);
_ = try sema.analyzeCall(block, panic_fn, src, src, .auto, false, &args, null);
return always_noreturn;
}
@ -19223,7 +19233,7 @@ fn panicUnwrapError(
const err = try fail_block.addTyOp(unwrap_err_tag, Type.anyerror, operand);
const err_return_trace = try sema.getErrorReturnTrace(&fail_block, src);
const args: [2]Air.Inst.Ref = .{ err_return_trace, err };
_ = try sema.analyzeCall(&fail_block, panic_fn, src, src, .auto, false, &args);
_ = try sema.analyzeCall(&fail_block, panic_fn, src, src, .auto, false, &args, null);
}
}
try sema.addSafetyCheckExtra(parent_block, ok, &fail_block);
@ -19264,7 +19274,7 @@ fn panicIndexOutOfBounds(
} else {
const panic_fn = try sema.getBuiltin(&fail_block, src, "panicOutOfBounds");
const args: [2]Air.Inst.Ref = .{ index, len };
_ = try sema.analyzeCall(&fail_block, panic_fn, src, src, .auto, false, &args);
_ = try sema.analyzeCall(&fail_block, panic_fn, src, src, .auto, false, &args, null);
}
}
try sema.addSafetyCheckExtra(parent_block, ok, &fail_block);

24
test/compile_errors.zig
View file

@ -183,6 +183,30 @@ pub fn addCases(ctx: *TestContext) !void {
});
}
{
const case = ctx.obj("argument causes error ", .{});
case.backend = .stage2;
case.addSourceFile("b.zig",
\\pub const ElfDynLib = struct {
\\ pub fn lookup(self: *ElfDynLib, comptime T: type) ?T {
\\ _ = self;
\\ return undefined;
\\ }
\\};
);
case.addError(
\\pub export fn entry() void {
\\ var lib: @import("b.zig").ElfDynLib = undefined;
\\ _ = lib.lookup(fn () void);
\\}
, &[_][]const u8{
":3:12: error: unable to resolve comptime value",
":3:12: note: argument to function being called at comptime must be comptime known",
});
}
// TODO test this in stage2, but we won't even try in stage1
//ctx.objErrStage1("inline fn calls itself indirectly",
// \\export fn foo() void {