Use print to string instead of dump

src/llvm_ir.rs

@@ -1,4 +1,4 @@
-use std::ffi::CString;
+use std::ffi::{CStr, CString};
 use std::mem;
 
 use llvm_sys::{core::*, prelude::*, LLVMBuilder, LLVMContext, LLVMModule};
@@ -80,10 +80,8 @@ impl IRModule {
         }
     }
 
-    pub fn dump(&mut self) {
+    pub fn print_to_string(&mut self) -> Result<&str, std::str::Utf8Error> {
-        unsafe {
+        unsafe { CStr::from_ptr(LLVMPrintModuleToString(self.module)).to_str() }
-            LLVMDumpModule(self.module);
-        }
     }
 }
 

src/main.rs

@@ -36,5 +36,5 @@ fn main() {
     for statement in statements {
         statement.codegen(&mut module);
     }
-    module.dump();
+    println!("{}", module.print_to_string().unwrap());
 }