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windows: document panics in LazyProc

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Some of LazyProc's methods will panic if the procedure cannot be
found. This patch documents that fact.

Change-Id: If446a61e001ae04eaba0ff08b512df4def8a00b7
Reviewed-on: https://go-review.googlesource.com/73450
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
Kieran Colford
2017-10-25 22:41:41 +00:00
committed by Alex Brainman
parent 9e4fff1f4d
commit 5d0dd06d1c
1 changed files with 2 additions and 1 deletions
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windows/dll_windows.go
+2 -1
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@@ -289,6 +289,7 @@ func (p *LazyProc) mustFind() {
// Addr returns the address of the procedure represented by p. // Addr returns the address of the procedure represented by p.
// The return value can be passed to Syscall to run the procedure. // The return value can be passed to Syscall to run the procedure.
// It will panic if the procedure cannot be found.
func (p *LazyProc) Addr() uintptr { func (p *LazyProc) Addr() uintptr {
p.mustFind() p.mustFind()
return p.proc.Addr() return p.proc.Addr()
@@ -297,7 +298,7 @@ func (p *LazyProc) Addr() uintptr {
//go:uintptrescapes //go:uintptrescapes
// Call executes procedure p with arguments a. It will panic, if more then 15 arguments // Call executes procedure p with arguments a. It will panic, if more then 15 arguments
// are supplied. // are supplied. It will also panic if the procedure cannot be found.
// //
// The returned error is always non-nil, constructed from the result of GetLastError. // The returned error is always non-nil, constructed from the result of GetLastError.
// Callers must inspect the primary return value to decide whether an error occurred // Callers must inspect the primary return value to decide whether an error occurred