diff --git a/examples/hello.ry b/examples/hello.ry
index 62bfab3..40e69a4 100644
--- a/examples/hello.ry
+++ b/examples/hello.ry
@@ -30,5 +30,5 @@ fn add(a: i32, b: i32) i32 {
 }
 
 fn main() i32 {
-    return 1;
+    return 123;
 }
diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 6da6f82..6071da0 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -4,8 +4,7 @@ const llvm = @import("../llvm.zig");
 const comp = @import("../comp_ctx.zig");
 const CompileError = @import("../codegen.zig").CompileError;
 
-fn sliceify(non_slice: ?[*]const u8) []const u8 {
-    if (non_slice == null) return "";
+fn sliceify(non_slice: ?[*:0]const u8) []const u8 {
     return non_slice.?[0..std.mem.len(u8, non_slice.?)];
 }
 
@@ -126,8 +125,8 @@ pub const Codegen = struct {
                 var right = try self.emitExpr(builder, unary.right);
 
                 return switch (unary.op) {
-                    .Negate => llvm.LLVMBuildNeg(builder, right, c"neg_tmp"),
-                    .Not => llvm.LLVMBuildNot(builder, right, c"neg_tmp"),
+                    .Negate => llvm.LLVMBuildNeg(builder, right, "neg_tmp"),
+                    .Not => llvm.LLVMBuildNot(builder, right, "neg_tmp"),
                 };
             },
 
@@ -136,13 +135,13 @@ pub const Codegen = struct {
                 var right = try self.emitExpr(builder, binary.right);
 
                 return switch (binary.op) {
-                    .Add => llvm.LLVMBuildAdd(builder, left, right, c"addtmp"),
-                    .Sub => llvm.LLVMBuildSub(builder, left, right, c"subtmp"),
-                    .Mul => llvm.LLVMBuildMul(builder, left, right, c"multmp"),
+                    .Add => llvm.LLVMBuildAdd(builder, left, right, "addtmp"),
+                    .Sub => llvm.LLVMBuildSub(builder, left, right, "subtmp"),
+                    .Mul => llvm.LLVMBuildMul(builder, left, right, "multmp"),
 
-                    //.Div => llvm.LLVMBuildDiv(builder, left, right, c"divtmp"),
-                    .And => llvm.LLVMBuildAnd(builder, left, right, c"andtmp"),
-                    .Or => llvm.LLVMBuildOr(builder, left, right, c"ortmp"),
+                    //.Div => llvm.LLVMBuildDiv(builder, left, right, "divtmp"),
+                    .And => llvm.LLVMBuildAnd(builder, left, right, "andtmp"),
+                    .Or => llvm.LLVMBuildOr(builder, left, right, "ortmp"),
 
                     else => {
                         std.debug.warn("Unexpected binary operator: '{}'\n", binary.op);
@@ -199,7 +198,7 @@ pub const Codegen = struct {
                     llvm_func.?.value,
                     args_slice.ptr,
                     @intCast(c_uint, args_slice.len),
-                    c"call",
+                    "call",
                 );
             },
 
@@ -276,14 +275,14 @@ pub const Codegen = struct {
             .If => |ifstmt| {
                 var cond = try self.emitExpr(builder, ifstmt.condition);
                 var zero = mkLLVMBool(false);
-                var icmp = llvm.LLVMBuildICmp(builder, llvm.LLVMIntPredicate.LLVMIntNE, cond, zero, c"ifcond");
+                var icmp = llvm.LLVMBuildICmp(builder, llvm.LLVMIntPredicate.LLVMIntNE, cond, zero, "ifcond");
 
                 var insert = llvm.LLVMGetInsertBlock(builder);
                 var function = llvm.LLVMGetBasicBlockParent(insert);
 
-                var then_bb = llvm.LLVMAppendBasicBlock(function, c"then");
-                var else_bb = llvm.LLVMAppendBasicBlock(function, c"else");
-                var merge_bb = llvm.LLVMAppendBasicBlock(function, c"ifcont");
+                var then_bb = llvm.LLVMAppendBasicBlock(function, "then");
+                var else_bb = llvm.LLVMAppendBasicBlock(function, "else");
+                var merge_bb = llvm.LLVMAppendBasicBlock(function, "ifcont");
 
                 var condbr = llvm.LLVMBuildCondBr(builder, icmp, then_bb, else_bb);
 
@@ -514,7 +513,7 @@ pub const Codegen = struct {
         std.debug.warn("cgen: start gen\n");
         _ = llvm.LLVMInitializeNativeTarget();
 
-        var mod = llvm.LLVMModuleCreateWithName(c"awoo").?;
+        var mod = llvm.LLVMModuleCreateWithName("awoo").?;
         defer llvm.LLVMDisposeModule(mod);
 
         var root_slice = root.Root.toSlice();
@@ -522,15 +521,15 @@ pub const Codegen = struct {
             try self.genNode(mod, &root_slice[idx]);
         }
 
-        var err: ?[*]u8 = null;
+        var err: ?[*:0]u8 = null;
         defer llvm.LLVMDisposeMessage(err);
 
-        if (llvm.LLVMPrintModuleToFile(mod, c"output.ll", &err) != 0) {
+        if (llvm.LLVMPrintModuleToFile(mod, "output.ll", &err) != 0) {
             std.debug.warn("error printing module to file: {}\n", sliceify(err));
             return CompileError.BackendError;
         }
 
-        //if (llvm.LLVMWriteBitcodeToFile(mod, c"awoo.bc") != 0) {
+        //if (llvm.LLVMWriteBitcodeToFile(mod, "awoo.bc") != 0) {
         //    std.debug.warn("error writing bitcode to file: {}\n", sliceify(err));
         //    return CompileError.BackendError;
         //}
diff --git a/src/main.zig b/src/main.zig
index 4dc9918..5e91ab8 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -60,7 +60,7 @@ pub fn run(allocator: *std.mem.Allocator, slice: []const u8) !Result {
     try cgen.gen(root);
 
     var child = try std.ChildProcess.init(
-        [_][]const u8{ "gcc", "src/entry.c", "outpath.o", "-o", "a.out" },
+        &[_][]const u8{ "gcc", "src/entry.c", "outpath.o", "-o", "a.out" },
         allocator,
     );
     try child.spawn();