commit 5083912dd79249a8954fd3e1e381a0cd7c624fbd
author Chris Lattner <sabre@nondot.org> Wed Aug 18 00:33:47 2010 +0000
committer Chris Lattner <sabre@nondot.org> Wed Aug 18 00:33:47 2010 +0000
tree 8fd702c3f710790f04753abb999b75ba356e0d10
parent c62a4b0f03269fdad85fa683d57f1bd2b80a5c7a

stomp some more undefined behavior, PR7775.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111337 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/APInt.cpp

diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 262fa42..8a212a2 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -2123,15 +2123,16 @@
     char *BufPtr = Buffer+65;
 
     uint64_t N;
-    if (Signed) {
-      int64_t I = getSExtValue();
-      if (I < 0) {
-        Str.push_back('-');
-        I = -I;
-      }
-      N = I;
-    } else {
+    if (!Signed) {
       N = getZExtValue();
+    } else {
+      int64_t I = getSExtValue();
+      if (I >= 0) {
+        N = I;
+      } else {
+        Str.push_back('-');
+        N = -(uint64_t)I;
+      }
     }
 
     while (N) {