Merge pull request #20933 from michaelnebel/csharp/runtraceraftercompilation

C#: Invoke the extractor after the compiler to ensure that source generators have been executed.

Author: michaelnebel

csharp/ql/lib/change-notes/2025-12-03-run-tracer-after-compilation.md

@@ -0,0 +1,4 @@
+---
+category: fix
+---
+* Fixed an issue where compiler-generated files were not being extracted. The extractor now runs after compilation completes to ensure all generated files are properly analyzed.

csharp/tools/tracing-config.lua

@@ -183,7 +183,7 @@ function RegisterExtractorPack(id)
         MsBuildMatcher,
         CreatePatternMatcher({ '^csc.*%.exe$' }, MatchCompilerName, extractor, {
             prepend = { '--compiler', '"${compiler}"' },
-            order = ORDER_BEFORE
+            order = ORDER_AFTER
         }),
         CreatePatternMatcher({ '^fakes.*%.exe$', 'moles.*%.exe' },
             MatchCompilerName, nil, { trace = false }),
@@ -224,7 +224,7 @@ function RegisterExtractorPack(id)
         CreatePatternMatcher({ '^mcs%.exe$', '^csc%.exe$', '^csc$' }, MatchCompilerName,
             extractor, {
             prepend = { '--compiler', '${compiler}' },
-            order = ORDER_BEFORE
+            order = ORDER_AFTER
         }),
         MsBuildMatcher,
         function(compilerName, compilerPath, compilerArguments, _languageId)