Print error if max build configurations are exceeded.

1 files changed, 13 insertions, 4 deletions

diff --git a/libcppbuild.cc b/libcppbuild.cc
index 8d5231f..441ba00 100644
--- a/libcppbuild.cc
+++ b/libcppbuild.cc
@@ -88,20 +88,29 @@ std::shared_ptr<Task> getNextTask(const std::list<std::shared_ptr<Task>>& allTas
 	return nullptr;
 }
 
-struct Config
+namespace
+{
+struct BuildConfigurationEntry
 {
 	const char* file;
 	std::vector<BuildConfiguration> (*cb)();
 };
-std::array<Config, 100> configFiles;
+std::array<BuildConfigurationEntry, 1024> configFiles;
 int numConfigFiles{0};
+}
 
 // TODO: Use c++20 when ready, somehing like this:
 //int reg(const std::source_location location = std::source_location::current())
-int reg(const char* location,
-        std::vector<BuildConfiguration> (*cb)())
+int reg(const char* location, std::vector<BuildConfiguration> (*cb)())
 {
 	// NOTE: std::cout cannot be used here
+	if(numConfigFiles >= configFiles.size())
+	{
+		fprintf(stderr, "Max %d build configurations currently supported.\n",
+		        (int)configFiles.size());
+		exit(1);
+	}
+
 	configFiles[numConfigFiles].file = location;
 	configFiles[numConfigFiles].cb = cb;
 	++numConfigFiles;