VS: Add support for ASAN -fsanitize=address flag

Fixes: #21081

Source/cmVisualStudio10TargetGenerator.cxx

@@ -1468,6 +1468,10 @@ void cmVisualStudio10TargetGenerator::WriteMSToolConfigurationValues(
   if (this->IPOEnabledConfigurations.count(config) > 0) {
     e1.Element("WholeProgramOptimization", "true");
   }
+  if (this->ASanEnabledConfigurations.find(config) !=
+      this->ASanEnabledConfigurations.end()) {
+    e1.Element("EnableAsan", "true");
+  }
   {
     auto s = this->SpectreMitigation.find(config);
     if (s != this->SpectreMitigation.end()) {
@@ -3075,6 +3079,11 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
     this->IPOEnabledConfigurations.insert(configName);
   }
 
+  // Check if ASan is enabled.
+  if (flags.find("/fsanitize=address") != std::string::npos) {
+    this->ASanEnabledConfigurations.insert(configName);
+  }
+
   // Precompile Headers
   std::string pchHeader =
     this->GeneratorTarget->GetPchHeader(configName, linkLanguage);

Source/cmVisualStudio10TargetGenerator.h

@@ -229,6 +229,7 @@ private:
   unsigned int NsightTegraVersion[4];
   bool TargetCompileAsWinRT;
   std::set<std::string> IPOEnabledConfigurations;
+  std::set<std::string> ASanEnabledConfigurations;
   std::map<std::string, std::string> SpectreMitigation;
   cmGlobalVisualStudio10Generator* const GlobalGenerator;
   cmLocalVisualStudio10Generator* const LocalGenerator;