Add comment about -fcolor-diagnostics and assembler language

diff --git a/src/argprocessing.cpp b/src/argprocessing.cpp
index 8580f2e52950094007adb39c32f210a280d5b778..7957fd9a59a86b1ef8ee2ea9e8cf6f3b1120ac6a 100644 (file)
--- a/src/argprocessing.cpp
+++ b/src/argprocessing.cpp
@@ -1100,6 +1100,8 @@ process_args(Context& ctx)
   // default, so force it explicitly.
   nonstd::optional<std::string> diagnostics_color_arg;
   if (ctx.guessed_compiler == GuessedCompiler::clang) {
+    // Don't pass -fcolor-diagnostics when compiling assembler to avoid an
+    // "argument unused during compilation" warning.
     if (args_info.actual_language != "assembler") {
       diagnostics_color_arg = "-fcolor-diagnostics";
     }