[PATCH] Support/APFloat, fix assert on convertFromString(toString(infty))

[Johan Engelen]

Hello,
   Here is a patch for /lib/Support/APFloat.cpp that fixes an assert 
when the output of APFloat::toString() is fed back into 
APFloat::convertFromString().

For infinity, toString() outputs a string with upper case "Inf", whereas 
convertFromString() only accepts lowercase "inf".

The patch adds "Inf" and "-Inf" to the accepted strings in 
convertFromString(), and modifies the output from toString() to "Inf" 
instead of "+Inf" for positive infinity.

Thanks,
   Johan
-------------- next part --------------
Index: lib/Support/APFloat.cpp
===================================================================
--- lib/Support/APFloat.cpp	(revision 232407)
+++ lib/Support/APFloat.cpp	(working copy)
@@ -2615,12 +2615,12 @@
 
 bool
 APFloat::convertFromStringSpecials(StringRef str) {
-  if (str.equals("inf") || str.equals("INFINITY")) {
+  if (str.equals("inf") || str.equals("Inf") || str.equals("INFINITY")) {
     makeInf(false);
     return true;
   }
 
-  if (str.equals("-inf") || str.equals("-INFINITY")) {
+  if (str.equals("-inf") || str.equals("-Inf") || str.equals("-INFINITY")) {
     makeInf(true);
     return true;
   }
@@ -3549,7 +3549,7 @@
     if (isNegative())
       return append(Str, "-Inf");
     else
-      return append(Str, "+Inf");
+      return append(Str, "Inf");
 
   case fcNaN: return append(Str, "NaN");