bug 319384: Don't use unsigned objects for signed values. Also give the "can't convert to integer" error an exception type so that it can be caught. r=daumling@adobe.com sr=brendan

js/src/js.msg

@@ -114,7 +114,7 @@ MSG_DEF(JSMSG_BAD_INSTANCEOF_RHS,      31, 1, JSEXN_TYPEERR, "invalid 'instanceo
 MSG_DEF(JSMSG_BAD_BYTECODE,            32, 1, JSEXN_INTERNALERR, "unimplemented JavaScript bytecode {0}")
 MSG_DEF(JSMSG_BAD_RADIX,               33, 1, JSEXN_ERR, "illegal radix {0}")
 MSG_DEF(JSMSG_NAN,                     34, 1, JSEXN_ERR, "{0} is not a number")
-MSG_DEF(JSMSG_CANT_CONVERT,            35, 1, JSEXN_NONE, "can't convert {0} to an integer")
+MSG_DEF(JSMSG_CANT_CONVERT,            35, 1, JSEXN_ERR, "can't convert {0} to an integer")
 MSG_DEF(JSMSG_CYCLIC_VALUE,            36, 1, JSEXN_ERR, "cyclic {0} value")
 MSG_DEF(JSMSG_PERMANENT,               37, 1, JSEXN_ERR, "{0} is permanent")
 MSG_DEF(JSMSG_CANT_CONVERT_TO,         38, 2, JSEXN_TYPEERR, "can't convert {0} to {1}")

js/src/jspubtd.h

@@ -567,7 +567,7 @@ typedef enum JSExnType {
 typedef struct JSErrorFormatString {
     const char *format;  /* the error message (may be UTF-8 if compiled with JS_STRINGS_ARE_UTF8) */
     uint16 argCount;     /* the number of arguments to convert in the error message */
-    uint16 exnType;      /* One of the JSExnType constants above */
+    int16 exnType;       /* One of the JSExnType constants above */
 } JSErrorFormatString;
 
 typedef const JSErrorFormatString *