Add portability tests on Linux to make sure that build with -fno-exceptions

continues to work

Makefile

@@ -142,14 +142,14 @@ LDXX_asan-noleaks = clang++
 CPPFLAGS_asan-noleaks = -O0 -fsanitize-coverage=edge -fsanitize=address -fno-omit-frame-pointer -Wno-unused-command-line-argument -DGPR_NO_DIRECT_SYSCALLS
 LDFLAGS_asan-noleaks = -fsanitize=address
 
-VALID_CONFIG_c++-compat = 1
-CC_c++-compat = $(DEFAULT_CC)
-CXX_c++-compat = $(DEFAULT_CXX)
-LD_c++-compat = $(DEFAULT_CC)
-LDXX_c++-compat = $(DEFAULT_CXX)
-CFLAGS_c++-compat = -Wc++-compat
-CPPFLAGS_c++-compat = -O0
-DEFINES_c++-compat = _DEBUG DEBUG
+VALID_CONFIG_noexcept = 1
+CC_noexcept = $(DEFAULT_CC)
+CXX_noexcept = $(DEFAULT_CXX)
+LD_noexcept = $(DEFAULT_CC)
+LDXX_noexcept = $(DEFAULT_CXX)
+CXXFLAGS_noexcept = -fno-exceptions
+CPPFLAGS_noexcept = -O2
+DEFINES_noexcept = NDEBUG
 
 VALID_CONFIG_ubsan = 1
 REQUIRE_CUSTOM_LIBRARIES_ubsan = 1
@@ -205,6 +205,15 @@ LDXX_lto = $(DEFAULT_CXX)
 CPPFLAGS_lto = -O2
 DEFINES_lto = NDEBUG
 
+VALID_CONFIG_c++-compat = 1
+CC_c++-compat = $(DEFAULT_CC)
+CXX_c++-compat = $(DEFAULT_CXX)
+LD_c++-compat = $(DEFAULT_CC)
+LDXX_c++-compat = $(DEFAULT_CXX)
+CFLAGS_c++-compat = -Wc++-compat
+CPPFLAGS_c++-compat = -O0
+DEFINES_c++-compat = _DEBUG DEBUG
+
 VALID_CONFIG_mutrace = 1
 CC_mutrace = $(DEFAULT_CC)
 CXX_mutrace = $(DEFAULT_CXX)

build.yaml

@@ -4966,6 +4966,10 @@ configs:
     CPPFLAGS: -O3 -fno-omit-frame-pointer
     DEFINES: NDEBUG
     LDFLAGS: -rdynamic
+  noexcept:
+    CPPFLAGS: -O2
+    CXXFLAGS: -fno-exceptions
+    DEFINES: NDEBUG
   opt:
     CPPFLAGS: -O2
     DEFINES: NDEBUG

tools/run_tests/generated/configs.json

@@ -42,7 +42,7 @@
     }
   }, 
   {
-    "config": "c++-compat"
+    "config": "noexcept"
   }, 
   {
     "config": "ubsan", 
@@ -73,6 +73,9 @@
   {
     "config": "lto"
   }, 
+  {
+    "config": "c++-compat"
+  }, 
   {
     "config": "mutrace"
   }, 

tools/run_tests/run_tests_matrix.py

@@ -313,6 +313,15 @@ def _create_portability_test_jobs(extra_args=[],
         extra_envs={'GRPC_DNS_RESOLVER': 'ares'},
         timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
 
+    # C and C++ with no-exceptions on Linux
+    test_jobs += _generate_jobs(
+        languages=['c', 'c++'],
+        configs=['noexcept'],
+        platforms=['linux'],
+        labels=['portability', 'corelang'],
+        extra_args=extra_args,
+        timeout_seconds=_CPP_RUNTESTS_TIMEOUT)
+
     # TODO(zyc): Turn on this test after adding c-ares support on windows.
     # C with the c-ares DNS resolver on Windows
     # test_jobs += _generate_jobs(languages=['c'],