diff options
Diffstat (limited to 'src/cmd/compile/internal/noder/noder.go')
| -rw-r--r-- | src/cmd/compile/internal/noder/noder.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/noder/noder.go b/src/cmd/compile/internal/noder/noder.go index d0d95451ac..c99c085037 100644 --- a/src/cmd/compile/internal/noder/noder.go +++ b/src/cmd/compile/internal/noder/noder.go @@ -359,8 +359,14 @@ func (p *noder) pragma(pos syntax.Pos, blankLine bool, text string, old syntax.P // contain cgo directives, and for security reasons // (primarily misuse of linker flags), other files are not. // See golang.org/issue/23672. +// Note that cmd/go ignores files whose names start with underscore, +// so the only _cgo_ files we will see from cmd/go are generated by cgo. +// It's easy to bypass this check by calling the compiler directly; +// we only protect against uses by cmd/go. func isCgoGeneratedFile(pos syntax.Pos) bool { - return strings.HasPrefix(filepath.Base(trimFilename(pos.Base())), "_cgo_") + // We need the absolute file, independent of //line directives, + // so we call pos.Base().Pos(). + return strings.HasPrefix(filepath.Base(trimFilename(pos.Base().Pos().Base())), "_cgo_") } // safeArg reports whether arg is a "safe" command-line argument, |