Bump the version of gcc to 4.9

templates/tools/dockerfile/test/cxx_jessie_x64/Dockerfile.template

@@ -24,8 +24,8 @@
   <%include file="../../run_tests_addons.include"/>
   <%include file="../../libuv_install.include"/>
 
-  # Install gcc-4.8 and other relevant items
-  RUN apt-get update && apt-get -y install gcc-4.8 gcc-4.8-multilib g++-4.8 g++-4.8-multilib && apt-get clean
+  # Install gcc-4.9 and other relevant items
+  RUN apt-get update && apt-get -y install gcc gcc-multilib g++ g++-multilib && apt-get clean
 
   # Define the default command.
   CMD ["bash"]

templates/tools/dockerfile/test/cxx_jessie_x86/Dockerfile.template

@@ -24,8 +24,8 @@
   <%include file="../../run_tests_addons.include"/>
   <%include file="../../cmake_jessie_backports.include"/>
 
-  # Install gcc-4.8 and other relevant items
-  RUN apt-get update && apt-get -y install gcc-4.8 gcc-4.8-multilib g++-4.8 g++-4.8-multilib && apt-get clean
+  # Install gcc-4.9 and other relevant items
+  RUN apt-get update && apt-get -y install gcc gcc-multilib g++ g++-multilib && apt-get clean
 
   # Define the default command.
   CMD ["bash"]

tools/dockerfile/test/cxx_jessie_x64/Dockerfile

@@ -89,8 +89,8 @@ RUN mkdir /var/local/jenkins
 # libuv
 RUN cd /tmp     && wget http://dist.libuv.org/dist/v1.9.1/libuv-v1.9.1.tar.gz     && tar -xf libuv-v1.9.1.tar.gz     && cd libuv-v1.9.1     && sh autogen.sh && ./configure --prefix=/usr && make && make install
 
-# Install gcc-4.8 and other relevant items
-RUN apt-get update && apt-get -y install gcc-4.8 gcc-4.8-multilib g++-4.8 g++-4.8-multilib && apt-get clean
+# Install gcc-4.9 and other relevant items
+RUN apt-get update && apt-get -y install gcc gcc-multilib g++ g++-multilib && apt-get clean
 
 # Define the default command.
 CMD ["bash"]

tools/dockerfile/test/cxx_jessie_x86/Dockerfile

@@ -86,8 +86,8 @@ RUN sed -i '/deb http:\/\/deb.debian.org\/debian jessie-updates main/d' /etc/apt
 RUN apt-get update && apt-get install -t jessie-backports -y cmake && apt-get clean
 
 
-# Install gcc-4.8 and other relevant items
-RUN apt-get update && apt-get -y install gcc-4.8 gcc-4.8-multilib g++-4.8 g++-4.8-multilib && apt-get clean
+# Install gcc-4.9 and other relevant items
+RUN apt-get update && apt-get -y install gcc gcc-multilib g++ g++-multilib && apt-get clean
 
 # Define the default command.
 CMD ["bash"]

tools/run_tests/run_tests.py

@@ -512,8 +512,6 @@ class CLanguage(object):
 
         if compiler == 'gcc4.9' or compiler == 'default':
             return ('jessie', [])
-        elif compiler == 'gcc4.8':
-            return ('jessie', self._gcc_make_options(version_suffix='-4.8'))
         elif compiler == 'gcc5.3':
             return ('ubuntu1604', [])
         elif compiler == 'gcc7.4':
@@ -1455,12 +1453,11 @@ argp.add_argument(
 argp.add_argument(
     '--compiler',
     choices=[
-        'default', 'gcc4.4', 'gcc4.6', 'gcc4.8', 'gcc4.9', 'gcc5.3', 'gcc7.4',
-        'gcc8.3', 'gcc_musl', 'clang3.4', 'clang3.5', 'clang3.6', 'clang3.7',
-        'clang7.0', 'python2.7', 'python3.5', 'python3.6', 'python3.7',
-        'python3.8', 'pypy', 'pypy3', 'python_alpine', 'all_the_cpythons',
-        'electron1.3', 'electron1.6', 'coreclr', 'cmake', 'cmake_vs2015',
-        'cmake_vs2017'
+        'default', 'gcc4.9', 'gcc5.3', 'gcc7.4', 'gcc8.3', 'gcc_musl',
+        'clang3.4', 'clang3.5', 'clang3.6', 'clang3.7', 'clang7.0', 'python2.7',
+        'python3.5', 'python3.6', 'python3.7', 'python3.8', 'pypy', 'pypy3',
+        'python_alpine', 'all_the_cpythons', 'electron1.3', 'electron1.6',
+        'coreclr', 'cmake', 'cmake_vs2015', 'cmake_vs2017'
     ],
     default='default',
     help=

tools/run_tests/run_tests_matrix.py

@@ -308,7 +308,7 @@ def _create_portability_test_jobs(extra_args=[],
 
     # portability C and C++ on x64
     for compiler in [
-            'gcc4.8', 'gcc5.3', 'gcc7.4', 'gcc8.3', 'gcc_musl', 'clang3.5',
+            'gcc4.9', 'gcc5.3', 'gcc7.4', 'gcc8.3', 'gcc_musl', 'clang3.5',
             'clang3.6', 'clang3.7', 'clang7.0'
     ]:
         test_jobs += _generate_jobs(languages=['c', 'c++'],