[PATCH v2] c++: Use in-process client when networking is disabled

[Torbjörn SVENSSON via Gcc-patches]

v1 -> v2:
Updated expression in bad-mapper-3.C

Ok for trunk?

---

Without the patch, the output for bad-mapper-3.C would be:

/src/gcc/gcc/testsuite/g++.dg/modules/bad-mapper-3.C:2:1: error: unknown 
Compiled Module Interface: no such module

As this line is unexpected, the test case would fail.
The same problem can also be seen for g++.dg/modules/bad-mapper-2.C.

gcc/cp/ChangeLog:

        * mapper-client.cc: Use in-process client when networking is
        disabled.

gcc/testsuite/ChangeLog:

        * g++.dg/modules/bad-mapper-3.C: Update dg-error pattern.

Tested on Windows with arm-none-eabi for Cortex-M3 in gcc-11 tree.

Co-Authored-By: Yvan ROUX <yvan.r...@foss.st.com>
Signed-off-by: Torbjörn SVENSSON <torbjorn.svens...@foss.st.com>
---
 gcc/cp/mapper-client.cc                     | 4 ++++
 gcc/testsuite/g++.dg/modules/bad-mapper-3.C | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gcc/cp/mapper-client.cc b/gcc/cp/mapper-client.cc
index fe9544b5ba4..4dcb3a03660 100644
--- a/gcc/cp/mapper-client.cc
+++ b/gcc/cp/mapper-client.cc
@@ -227,6 +227,8 @@ module_client::open_module_client (location_t loc, const 
char *o,
                int fd = -1;
 #if CODY_NETWORKING
                fd = Cody::OpenLocal (&errmsg, name.c_str () + 1);
+#else
+               errmsg = "CODY_NETWORKING disabled";
 #endif
                if (fd >= 0)
                  c = new module_client (fd, fd);
@@ -254,6 +256,8 @@ module_client::open_module_client (location_t loc, const 
char *o,
                        int fd = -1;
 #if CODY_NETWORKING
                        fd = Cody::OpenInet6 (&errmsg, name.c_str (), port);
+#else
+                       errmsg = "CODY_NETWORKING disabled";
 #endif
                        name[colon] = ':';
 
diff --git a/gcc/testsuite/g++.dg/modules/bad-mapper-3.C 
b/gcc/testsuite/g++.dg/modules/bad-mapper-3.C
index 9dab332ccb2..c91bb4e260c 100644
--- a/gcc/testsuite/g++.dg/modules/bad-mapper-3.C
+++ b/gcc/testsuite/g++.dg/modules/bad-mapper-3.C
@@ -1,6 +1,6 @@
 //  { dg-additional-options "-fmodules-ts -fmodule-mapper=localhost:172477262" 
}
 import unique3.bob;
-// { dg-error {failed connecting mapper 'localhost:172477262'} "" { target 
*-*-* } 0 }
+// { dg-error {failed (connecting|CODY_NETWORKING disabled) mapper 
'localhost:172477262'} "" { target *-*-* } 0 }
 // { dg-prune-output "fatal error:" }
 // { dg-prune-output "failed to read" }
 // { dg-prune-output "compilation terminated" }
-- 
2.25.1