[Issue 4323] std.demangle incorrectly handles template floating point numbers

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4323


kennytm at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch, wrong-code
          Component|Phobos                      |druntime


--- Comment #2 from kennytm at gmail.com 2011-05-08 02:45:28 PDT ---
The demangler forgot to put the 'p', making the exponent part totally ignored.
Also, using the '%f' format makes floating point number that is extremely small
becomes 0.00000. I think '%g' is more suitable.


diff --git a/src/core/demangle.d b/src/core/demangle.d
index 6d37633..b2ab00d 100644
--- a/src/core/demangle.d
+++ b/src/core/demangle.d
@@ -368,6 +368,7 @@ private struct Demangle
             next();
         }
         match( 'P' );
+        tbuf[tlen++] = 'p';
         if( 'N' == tok() )
         {
             tbuf[tlen++] = '-';
@@ -386,7 +387,7 @@ private struct Demangle
         tbuf[tlen] = 0;
         debug(info) printf( "got (%s)\n", tbuf.ptr );
         val = strtold( tbuf.ptr, null );
-        tlen = snprintf( tbuf.ptr, tbuf.length, "%Lf", val );
+        tlen = snprintf( tbuf.ptr, tbuf.length, "%Lg", val );
         debug(info) printf( "converted (%.*s)\n", cast(int) tlen, tbuf.ptr );
         put( tbuf[0 .. tlen] );
     }

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