[pushed] [gdb/testsuite] Fix stray file in get_compiler_info

[Tom de Vries]

When running test-case gdb.dwarf2/gdb-index-nodebug.exp with host board
local-remote-host and target board remote-gdbserver-on-localhost, I get:
...
$ ls build/gdb/testsuite
cache    compiler.i  config.log  config.status  gdb.log  gdb.sum  lib  Makefile
outputs  site.bak    site.exp    temp
...

The file compiler.i is there because get_compiler_info uses:
...
	set ppout "$outdir/compiler.i"
...

The file is a temporary, and as such belongs in a temp dir.  Fix this by using
standard_temp_file, moving the file to build/gdb/testsuite/temp/<pid>/compiler.i.

Tested on x86_64-linux.
---
 gdb/testsuite/lib/gdb.exp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index d092258a9e5..fe3f05c18df 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -4882,7 +4882,7 @@ proc get_compiler_info {{language "c"}} {
     if [is_remote host] {
 	# We have to use -E and -o together, despite the comments
 	# above, because of how DejaGnu handles remote host testing.
-	set ppout "$outdir/compiler.i"
+	set ppout [standard_temp_file compiler.i]
 	gdb_compile "${ifile}" "$ppout" preprocess [list "$language" quiet getting_compiler_info]
 	set file [open $ppout r]
 	set cppout [read $file]

base-commit: 385ab37c5b79a930f12ee05adc7d9af9f92fe578
-- 
2.35.3