Add cmake option SCITOKENS_WITH_ASAN which enables memory checking

with the address sanitizer.  Also enable this in CI, so that
tests fail if they hit a memory leak or other memory problem.

Author: GregThain

.github/workflows/ccpp.yml

@@ -19,6 +19,7 @@ jobs:
       matrix:
         external-gtest: [ YES, NO ]
         os: [ ubuntu-latest, ubuntu-22.04 ]
+        asan: [ YES, NO ]
 
     runs-on: ${{ matrix.os }}
     name: Build with external_gtest=${{ matrix.external-gtest }} on ${{ matrix.os }}
@@ -44,7 +45,7 @@ jobs:
       # Note the current convention is to use the -S and -B options here to specify source 
       # and build directories, but this is only available with CMake 3.13 and higher.  
       # The CMake binaries on the Github Actions machines are (as of this writing) 3.12
-      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSCITOKENS_BUILD_UNITTESTS=yes -DSCITOKENS_EXTERNAL_GTEST=${{ matrix.external-gtest }}
+      run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DSCITOKENS_BUILD_UNITTESTS=yes -DSCITOKENS_EXTERNAL_GTEST=${{ matrix.external-gtest }} -DSCITOKENS_WITH_ASAN=${{ matrix.asan }} 
 
     - name: Build
       working-directory: ${{runner.workspace}}/build

CMakeLists.txt

@@ -6,15 +6,21 @@ project( scitokens-cpp
 	VERSION 1.0.2
 	LANGUAGES CXX)
 
-option( SCITOKENS_BUILD_UNITTESTS "Build the scitokens-cpp unit tests" OFF )
-option( SCITOKENS_EXTERNAL_GTEST "Use an external/pre-installed copy of GTest" OFF )
+option( SCITOKENS_BUILD_UNITTESTS "Build the scitokens-cpp unit tests" ON )
+option( SCITOKENS_EXTERNAL_GTEST " Use an external/pre-installed copy of GTest" OFF )
+option( SCITOKENS_WITH_ASAN       "Build with the address santizier" OFF )
 
 set( CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake;${CMAKE_MODULE_PATH}" )
 
 set( CMAKE_BUILD_TYPE RelWithDebInfo) # -g -O2
 
 set( CMAKE_UNITY_BUILD False)
 
+if( SCITOKENS_WITH_ASAN )
+  add_compile_options(-fsanitize=address -fno-omit-frame-pointer)
+  add_link_options(-fsanitize=address)
+endif()
+
 include(GNUInstallDirs)
 
 find_package( jwt-cpp REQUIRED )