From 9f21ba24ebea7e74869811b23eeb778ed7d91527 Mon Sep 17 00:00:00 2001
From: "yu.dongliang" <18588496441@163.com>
Date: Sat, 25 Nov 2023 23:54:13 +0800
Subject: [PATCH] fix: core dump when test 'examples/declare_vars.c'

---
 core/scf_3ac.c                |  4 ++--
 core/scf_dag.h                |  2 --
 examples/declare_vars.c       | 13 +++++++++++++
 native/x64/scf_x64_peephole.c |  2 +-
 parse/scf_dfa_var.c           |  8 +++++++-
 parse/scf_parse.h             |  2 ++
 6 files changed, 25 insertions(+), 6 deletions(-)
 create mode 100644 examples/declare_vars.c

diff --git a/core/scf_3ac.c b/core/scf_3ac.c
index e62d8e0..3d1ff12 100644
--- a/core/scf_3ac.c
+++ b/core/scf_3ac.c
@@ -881,7 +881,7 @@ static void _3ac_filter_jmp(scf_list_t* h, scf_3ac_code_t* c)
 			c2->jmp_dst_flag      = 1;
 			break;
 		}
-
+#if 0
 		if (SCF_OP_GOTO == c->op->type) {
 			c->op        = c2->op;
 
@@ -893,7 +893,7 @@ static void _3ac_filter_jmp(scf_list_t* h, scf_3ac_code_t* c)
 			l2 = &dst1->code->list;
 			continue;
 		}
-
+#endif
 		scf_logw("c: %s, c2: %s\n", c->op->name, c2->op->name);
 		dst0       = c->dsts->data[0];
 		dst0->code = c2;
diff --git a/core/scf_dag.h b/core/scf_dag.h
index 2afa80c..f90e9d1 100644
--- a/core/scf_dag.h
+++ b/core/scf_dag.h
@@ -72,8 +72,6 @@ struct scf_dn_status_s {
 
 	intptr_t            color;
 
-	int                 ret_index;
-
 	uint32_t            active :1;
 	uint32_t            inited :1;
 	uint32_t            updated:1;
diff --git a/examples/declare_vars.c b/examples/declare_vars.c
new file mode 100644
index 0000000..cf7c5a2
--- /dev/null
+++ b/examples/declare_vars.c
@@ -0,0 +1,13 @@
+//第5章/setcc.c
+
+int printf(const char* fmt, ...);
+
+int main()
+{
+	int a = 1, b = 2, c = 3, d = 4;
+
+	int ret = a > b && b < c || c < d;
+
+	printf("ret: %d\n", ret);
+	return 0;
+}
diff --git a/native/x64/scf_x64_peephole.c b/native/x64/scf_x64_peephole.c
index 63ec4cc..8172558 100644
--- a/native/x64/scf_x64_peephole.c
+++ b/native/x64/scf_x64_peephole.c
@@ -478,7 +478,7 @@ int x64_optimize_peephole(scf_native_t* ctx, scf_function_t* f)
 					goto next;
 				}
 
-				scf_instruction_print(inst);
+//				scf_instruction_print(inst);
 
 				if (SCF_X64_CMP == inst->OpCode->type || SCF_X64_TEST == inst->OpCode->type) {
 
diff --git a/parse/scf_dfa_var.c b/parse/scf_dfa_var.c
index c7d634c..99e839b 100644
--- a/parse/scf_dfa_var.c
+++ b/parse/scf_dfa_var.c
@@ -238,6 +238,8 @@ static int _var_action_semicolon(scf_dfa_t* dfa, scf_vector_t* words, void* data
 	dfa_parse_data_t* d     = data;
 	dfa_identity_t*   id    = NULL;
 
+	d->var_semicolon_flag = 0;
+
 	if (_var_add_var(dfa, d) < 0) {
 		scf_loge("add var error\n");
 		return SCF_DFA_ERROR;
@@ -318,7 +320,11 @@ static int _var_action_assign(scf_dfa_t* dfa, scf_vector_t* words, void* data)
 	d->expr         = e;
 	d->expr_local_flag++;
 
-	SCF_DFA_PUSH_HOOK(scf_dfa_find_node(dfa, "var_semicolon"), SCF_DFA_HOOK_POST);
+	if (!d->var_semicolon_flag) {
+		SCF_DFA_PUSH_HOOK(scf_dfa_find_node(dfa, "var_semicolon"), SCF_DFA_HOOK_POST);
+		d->var_semicolon_flag = 1;
+	}
+
 	SCF_DFA_PUSH_HOOK(scf_dfa_find_node(dfa, "var_comma"), SCF_DFA_HOOK_POST);
 
 	scf_logd("d->expr: %p\n", d->expr);
diff --git a/parse/scf_parse.h b/parse/scf_parse.h
index d8dc890..8ef3d05 100644
--- a/parse/scf_parse.h
+++ b/parse/scf_parse.h
@@ -100,6 +100,8 @@ struct dfa_parse_data_s {
 	uint32_t             static_flag:1;
 	uint32_t             inline_flag:1;
 
+	uint32_t             var_semicolon_flag:1;
+
 	int              nb_lbs;
 	int              nb_rbs;
 
-- 
2.25.1