fix: Module.context invalid pointer error

example/el_psy_congaroo.py

@@ -1,2 +1,31 @@
-from llvmpym import error_handling
-error_handling.install_fatal_error_handler(lambda s: print(s))
+from llvmpym import core, utils
+
+asm_str = r'''
+    ; ModuleID = '<string>'
+    target triple = "unknown-unknown-unknown"
+    %struct.glob_type = type { i64, [2 x i64] }
+
+    @glob = global i32 0
+    @glob_b = global i8 0
+    @glob_f = global float 1.5
+    @glob_struct = global %struct.glob_type {i64 0, [2 x i64] [i64 0, i64 0]}
+
+    define zeroext i32 @sum(i32 nocapture %.1, i32 %.2) cold {
+      %.3 = add i32 %.1, %.2
+      %.4 = add i32 0, %.3
+      ret i32 %.4
+    }
+
+    define void @foo() "frame-pointer"="all" {
+      call void asm sideeffect "nop", ""()
+      ret void
+    }
+
+    declare void @a_readonly_func(i8 *) readonly
+'''
+
+m = utils.parse_assembly(asm_str)
+
+print(m.context) # FIXME
+# with core.Context.get_global_context() as ctx:
+#     print(ctx)

example/parse_ir_assmebly.py

@@ -26,7 +26,6 @@
 
 m = utils.parse_assembly(asm_str)
 
-
 for f in m.functions:
     print(f'Function | name: "{f.name}", type: "{f.type}"')  
     module = f.parent

src/llvm/Core/miscClasses.cpp

@@ -1525,7 +1525,10 @@ void bindOtherClasses(nb::module_ &m) {
                    "Obtain an iterator to the first NamedMDNode in a Module.")
       .def_prop_ro("context",
                    [](PymModule &m) {
-                     return PymContext(LLVMGetModuleContext(m.get()));
+                     // here we assume that the context got is global context
+                     // so that it won't be automatically destroyed, which
+                     // will cause an invalid pointer error.
+                     return PymContext(LLVMGetModuleContext(m.get()), true);
                    },
                    "Obtain the context to which this module is associated.")
       .def_prop_rw("id",

src/llvm/types_priv/PymContext.cpp

@@ -20,7 +20,6 @@ PymContext::PymContext(LLVMContextRef ctx, bool is_global_context) {
 }
 
 PymContext::PymContext(LLVMContextRef ctx) {
-  std::cout << 3 << std::endl;
   LLVMContextRef global_context = LLVMGetGlobalContext();
   is_global_context = global_context == context.get();