From: Richard Biener <rguenther@suse.de>
Date: Wed, 14 Dec 2016 10:35:11 +0000 (+0000)
Subject: re PR tree-optimization/78731 (Possible bug with switch when optimization is turned... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=007e18eb1f26a71ffd2eb598f3021a0c4be2aeb0;p=gcc.git

re PR tree-optimization/78731 (Possible bug with switch when optimization is turned on.)

2016-12-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78731
	* gcc.dg/torture/pr78731.c: New testcase.

From-SVN: r243644
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 43cf4900f5a..1d1b0346056 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-12-14  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/78731
+	* gcc.dg/torture/pr78731.c: New testcase.
+
 2016-12-14  Martin Liska  <mliska@suse.cz>
 
 	* gcc.dg/tree-ssa/20040703-1.c: Update scanned pattern.
diff --git a/gcc/testsuite/gcc.dg/torture/pr78731.c b/gcc/testsuite/gcc.dg/torture/pr78731.c
new file mode 100644
index 00000000000..5a4d43be1f9
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr78731.c
@@ -0,0 +1,41 @@
+/* { dg-do run } */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define GENERAL 1
+#define BRACKETS 2
+#define QUOTES 3
+
+void __attribute__((noinline,noclone))
+foo(char *qb, char* into)
+{
+  int state = QUOTES;
+  int save_state = BRACKETS;
+
+  while (qb)
+    {
+      switch (state)
+	{
+	case BRACKETS:
+	  exit(0);
+	case GENERAL:
+	  abort ();
+	case QUOTES:
+	  state = save_state;
+	  save_state = GENERAL;
+	  break;
+	default: ;
+	}
+      printf("State %d btw GENERAL %d\n", state, GENERAL);
+    }
+  abort ();
+}
+
+int main()
+{
+  char *b = "123";
+  char out[4];
+  foo(b, out);
+  return 0;
+}