From d2dd6fdbfb491c87138eb8d7590fbb28f471ec8d Mon Sep 17 00:00:00 2001
From: Philip <pipcet@gmail.com>
Date: Mon, 27 Apr 2015 16:38:27 +0000
Subject: fix VLA/continue issue

as reported in
http://lists.nongnu.org/archive/html/tinycc-devel/2015-04/msg00131.html. Note
that this is one of two separate VLA bugs:

 A. labels aren't reached by program execution, so the stack pointer is
 never saved
 B. continue doesn't restore the stack pointer as goto does

This fixes only B. I'm not sure whether the same issue applies to break
as well as continue.

Add a test case, but disable tests #78 and #79 for now as they're not
fully fixed until the issue described in
http://lists.nongnu.org/archive/html/tinycc-devel/2015-04/msg00110.html
is resolved.
---
 tests/tests2/79_vla_continue.c | 92 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 tests/tests2/79_vla_continue.c

(limited to 'tests/tests2/79_vla_continue.c')

diff --git a/tests/tests2/79_vla_continue.c b/tests/tests2/79_vla_continue.c
new file mode 100644
index 0000000..9c48c1d
--- /dev/null
+++ b/tests/tests2/79_vla_continue.c
@@ -0,0 +1,92 @@
+#include <stdio.h>
+
+int f(void)
+{
+  return 5;
+}
+
+void test1()
+{
+  int count = 10;
+  void *addr[10];
+  for(;count--;) {
+    int a[f()];
+
+    addr[count] = a;
+
+    continue;
+  }
+
+  if(addr[9] == addr[0]) {
+    printf("OK\n");
+  } else {
+    printf("NOT OK\n");
+  }
+}
+
+void test2()
+{
+  int count = 10;
+  void *addr[count];
+  for(;count--;) {
+    int a[f()];
+
+    addr[count] = a;
+
+    continue;
+  }
+
+  if(addr[9] == addr[0]) {
+    printf("OK\n");
+  } else {
+    printf("NOT OK\n");
+  }
+}
+
+void test3()
+{
+  int count = 10;
+  void *addr[count];
+  while(count--) {
+    int a[f()];
+
+    addr[count] = a;
+
+    continue;
+  }
+
+  if(addr[9] == addr[0]) {
+    printf("OK\n");
+  } else {
+    printf("NOT OK\n");
+  }
+}
+
+void test4()
+{
+  int count = 10;
+  void *addr[count];
+  do {
+    int a[f()];
+
+    addr[count] = a;
+
+    continue;
+  } while(count--);
+
+  if(addr[9] == addr[0]) {
+    printf("OK\n");
+  } else {
+    printf("NOT OK\n");
+  }
+}
+
+int main(void)
+{
+  test1();
+  test2();
+  test3();
+  test4();
+
+  return 0;
+}
-- 
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