build: set GOPATH consistently in run.bash, run.bat, run.rc

We used to clear GOPATH in all the build scripts.
Clearing GOPATH is misleading at best, since you just end up
with the default GOPATH (%USERPROFILE%\go on Windows).
Unless that's your GOROOT, in which case you end up with a
fatal error from the go command (#43938).

run.bash changed to setting GOPATH=/dev/null, which has no
clear analogue on Windows.

run.rc still clears GOPATH.

Change them all to set GOPATH to a non-existent directory
/nonexist-gopath or c:\nonexist-gopath.

Change-Id: I51edd66d37ff6a891b0d0541d91ecba97fbbb03d
Reviewed-on: https://go-review.googlesource.com/c/go/+/288818
Trust: Russ Cox <rsc@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/src/run.bash b/src/run.bash
index 706b4b60ee4f16edfdb6e137915670f4f1161017..2123c509f8b2511864001564858eec7698c2e7d0 100755 (executable)
--- a/src/run.bash
+++ b/src/run.bash
@@ -23,15 +23,7 @@ fi
 
 eval $(../bin/go env)
 export GOROOT   # The api test requires GOROOT to be set, so set it to match ../bin/go.
-
-# We disallow local import for non-local packages, if $GOROOT happens
-# to be under $GOPATH, then some tests below will fail.  $GOPATH needs
-# to be set to a non-empty string, else Go will set a default value
-# that may also conflict with $GOROOT.  The $GOPATH value doesn't need
-# to point to an actual directory, it just needs to pass the semantic
-# checks performed by Go.  Use $GOROOT to define $GOPATH so that we
-# don't blunder into a user-defined symbolic link.
-export GOPATH=/dev/null
+export GOPATH=/nonexist-gopath
 
 unset CDPATH   # in case user has it set
 export GOBIN=$GOROOT/bin  # Issue 14340

diff --git a/src/run.bat b/src/run.bat
index c299671c13f31381f997ce1c059d93f94db39369..edcaf5265931b8218b7e13990df35ba9e63bd8b3 100644 (file)
--- a/src/run.bat
+++ b/src/run.bat
@@ -18,9 +18,7 @@ setlocal
 \r
 set GOBUILDFAIL=0\r
 \r
-:: we disallow local import for non-local packages, if %GOROOT% happens\r
-:: to be under %GOPATH%, then some tests below will fail\r
-set GOPATH=\r
+set GOPATH=c:\nonexist-gopath\r
 :: Issue 14340: ignore GOBIN during all.bat.\r
 set GOBIN=\r
 set GOFLAGS=\r

diff --git a/src/run.rc b/src/run.rc
index ab7abfa991a62e7349c77e222a4ad0487e240169..a7b4801207051ae105eb44d639bf5876bf32e756 100755 (executable)
--- a/src/run.rc
+++ b/src/run.rc
@@ -12,10 +12,9 @@ if(! test -f ../bin/go){
 
 eval `{../bin/go env}
 
-GOPATH = () # we disallow local import for non-local packages, if $GOROOT happens
-            # to be under $GOPATH, then some tests below will fail
-GOBIN = () # Issue 14340
-GOFLAGS = ()
-GO111MODULE = ()
+GOPATH=/nonexist-gopath
+GOBIN=() # Issue 14340
+GOFLAGS=()
+GO111MODULE=()
 
 exec ../bin/go tool dist test -rebuild $*