runtime_clearenv.go

     1  // Copyright 2025 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build linux
     6  
     7  package runtime
     8  
     9  import "unsafe"
    10  
    11  var _cgo_clearenv unsafe.Pointer // pointer to C function
    12  
    13  // Clear the C environment if cgo is loaded.
    14  func clearenv_c() {
    15  	if _cgo_clearenv == nil {
    16  		return
    17  	}
    18  	asmcgocall(_cgo_clearenv, nil)
    19  }
    20  
    21  //go:linkname syscall_runtimeClearenv syscall.runtimeClearenv
    22  func syscall_runtimeClearenv(env map[string]int) {
    23  	clearenv_c()
    24  	// Did we just unset GODEBUG?
    25  	if _, ok := env["GODEBUG"]; ok {
    26  		godebugEnv.Store(nil)
    27  		godebugNotify(true)
    28  	}
    29  }
    30
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