From 5a39be832268d5263c7103f68309781a1b98901f Mon Sep 17 00:00:00 2001
From: Simeon Schaub <simeondavidschaub99@gmail.com>
Date: Wed, 18 Aug 2021 21:13:40 +0200
Subject: [PATCH] add hook for manually adding coverage data (#41904)

This would allow packages like JuliaInterpreter to properly report
coverage data.
---
 src/codegen.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/codegen.cpp b/src/codegen.cpp
index d05080ee4216e..744d29629b0ca 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -1897,6 +1897,16 @@ static void coverageAllocLine(StringRef filename, int line)
     allocLine(coverageData[filename], line);
 }
 
+extern "C" JL_DLLEXPORT void jl_coverage_visit_line(const char* filename_, size_t len_filename, int line)
+{
+    StringRef filename = StringRef(filename_, len_filename);
+    if (imaging_mode || filename == "" || filename == "none" || filename == "no file" || filename == "<missing>" || line < 0)
+        return;
+    std::vector<logdata_block*> &vec = coverageData[filename];
+    uint64_t *ptr = allocLine(vec, line);
+    (*ptr)++;
+}
+
 // Memory allocation log (malloc_log)
 
 static logdata_t mallocData;