From e750e1e3ee81105cbc59a45cf016e51a1c42932c Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Tue, 20 Dec 2022 23:48:12 -0800
Subject: Fix build without libcapstone

---
 mjit_c.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/mjit_c.c b/mjit_c.c
index 8552926287..08a6921be4 100644
--- a/mjit_c.c
+++ b/mjit_c.c
@@ -43,11 +43,14 @@
 // Fedora: dnf -y install capstone-devel
 #ifdef HAVE_LIBCAPSTONE
 #include <capstone/capstone.h>
+#endif
 
 // Return an array of [address, mnemonic, op_str]
 static VALUE
 dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
 {
+    VALUE result = rb_ary_new();
+#ifdef HAVE_LIBCAPSTONE
     // Prepare for calling cs_disasm
     static csh handle;
     if (cs_open(CS_ARCH_X86, CS_MODE_64, &handle) != CS_ERR_OK) {
@@ -59,7 +62,6 @@ dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
     // Call cs_disasm and convert results to a Ruby array
     cs_insn *insns;
     size_t count = cs_disasm(handle, (const uint8_t *)from_addr, to_addr - from_addr, from_addr, 0, &insns);
-    VALUE result = rb_ary_new_capa(count);
     for (size_t i = 0; i < count; i++) {
         VALUE vals = rb_ary_new_from_args(3, LONG2NUM(insns[i].address), rb_str_new2(insns[i].mnemonic), rb_str_new2(insns[i].op_str));
         rb_ary_push(result, vals);
@@ -68,15 +70,9 @@ dump_disasm(rb_execution_context_t *ec, VALUE self, VALUE from, VALUE to)
     // Free memory used by capstone
     cs_free(insns, count);
     cs_close(&handle);
+#endif
     return result;
 }
-#else
-static VALUE
-mjit_disasm(VALUE self, VALUE from, VALUE to)
-{
-    return rb_ary_new();
-}
-#endif
 
 #include "mjit_c.rbinc"
 
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