From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 5 Feb 2016 19:39:48 +0000 (+0100)
Subject: re PR c++/69628 (Conditional jump or move depends on uninitialised value(s) in lex_ch... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b5c1c988528a8761d802e923fe0a94160810c732;p=gcc.git

re PR c++/69628 (Conditional jump or move depends on uninitialised value(s) in lex_charconst(cpp_token const*) (c-lex.c:1252))

	PR c++/69628
	* charset.c (cpp_interpret_charconst): Clear *PCHARS_SEEN
	and *UNSIGNEDP if bailing out early due to errors.

	* g++.dg/parse/pr69628.C: New test.

From-SVN: r233186
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1f9bf5d19c8..7876edab435 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-02-05  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69628
+	* g++.dg/parse/pr69628.C: New test.
+
 2016-02-05  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.dg/sancov/asan.c: Move to ...
diff --git a/gcc/testsuite/g++.dg/parse/pr69628.C b/gcc/testsuite/g++.dg/parse/pr69628.C
new file mode 100644
index 00000000000..0bbd08b73d9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/parse/pr69628.C
@@ -0,0 +1,5 @@
+// PR c++/69628
+// { dg-do compile }
+
+0''; // { dg-error "empty character constant" }
+// { dg-error "expected unqualified-id before numeric constant" "" { target *-*-* } 4 }
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 10d71977d29..385b965488e 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,9 @@
+2016-02-05  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69628
+	* charset.c (cpp_interpret_charconst): Clear *PCHARS_SEEN
+	and *UNSIGNEDP if bailing out early due to errors.
+
 2016-01-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR pch/68176
diff --git a/libcpp/charset.c b/libcpp/charset.c
index 60cbde65dd4..2d07942de73 100644
--- a/libcpp/charset.c
+++ b/libcpp/charset.c
@@ -1620,10 +1620,17 @@ cpp_interpret_charconst (cpp_reader *pfile, const cpp_token *token,
   if (token->val.str.len == (size_t) (2 + wide + u8))
     {
       cpp_error (pfile, CPP_DL_ERROR, "empty character constant");
+      *pchars_seen = 0;
+      *unsignedp = 0;
+      return 0;
+    }
+  else if (!cpp_interpret_string (pfile, &token->val.str, 1, &str,
+				  token->type))
+    {
+      *pchars_seen = 0;
+      *unsignedp = 0;
       return 0;
     }
-  else if (!cpp_interpret_string (pfile, &token->val.str, 1, &str, token->type))
-    return 0;
 
   if (wide)
     result = wide_str_to_charconst (pfile, str, pchars_seen, unsignedp,