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go/types, types2: don't crash when using trace with an invalid argument

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This only affects tests, typically manual tests, but when using trace
we're debugging and we don't want to crash because of trace itself.

No test because a test would cause trace output. Manually verified.

Fixes #60649.

Change-Id: I97abdb94db05774801ec5da56171f4a1aff35615
Reviewed-on: https://go-review.googlesource.com/c/go/+/501415
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
This commit is contained in:
Robert Griesemer 2023-06-06 18:46:29 -07:00 committed by Gopher Robot
parent d6d0fec43d
commit ea51e92c8a
2 changed files with 6 additions and 0 deletions
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3
src/cmd/compile/internal/types2/builtins.go
View File

@ -893,6 +893,9 @@ func (check *Checker) builtin(x *operand, call *syntax.CallExpr, id builtinId) (
check.dump("%v: %s", atPos(x1), x1)
x1 = &t // use incoming x only for first argument
}
if x.mode == invalid {
return
}
// trace is only available in test mode - no need to record signature
default:

3
src/go/types/builtins.go
View File

@ -892,6 +892,9 @@ func (check *Checker) builtin(x *operand, call *ast.CallExpr, id builtinId) (_ b
check.dump("%v: %s", x1.Pos(), x1)
x1 = &t // use incoming x only for first argument
}
if x.mode == invalid {
return
}
// trace is only available in test mode - no need to record signature
default: