As far as I can see we don't explicitly set a compatibility mode so according to the SS 12 documentation [1] we are using -compat=5, which is the default. Also, according to [1], -feature=nortti can only be used in compat mode 4. So I'm afraid we have no choice :)
Regards, Volker https://docs.oracle.com/cd/E19205-01/819-5267/6n7c46ebk/index.html On Fri, Feb 24, 2017 at 1:19 AM, David Holmes <david.hol...@oracle.com> wrote: > On 24/02/2017 8:10 AM, Ioi Lam wrote: >> >> I noticed that on Solaris/SPARC, RTTI is enabled in the JVM build. Is >> there any reason for it? Just curious. > > > Probably accidental due to default compiler settings. AFAIK we do not use > any C++ RTTI in hotspot and it should not be enabled. > > David > ----- > > >> This is what I got in dbx when looking at the first slot of a C++ vtable: >> >> (dbx) print *(int**)(0xfffffffefa20bdd0) >> *((int **) 18446744069316066768U) = 0xfffffffef9de5b78 >> (dbx) dis 0xfffffffef9de6050 >> 0xfffffffef9de6050: __RTTI__1nFMyYYY4nMConstantPool___ : illtrap >> 0x0 >> 0xfffffffef9de6054: __RTTI__1nFMyYYY4nMConstantPool___+0x0004: illtrap >> 0xae8 >> 0xfffffffef9de6058: __RTTI__1nFMyYYY4nMConstantPool___+0x0008: illtrap >> 0x0 >> 0xfffffffef9de605c: __RTTI__1nFMyYYY4nMConstantPool___+0x000c: illtrap >> 0x0 >> 0xfffffffef9de6060: __RTTI__1nFMyYYY4nMConstantPool___+0x0010: illtrap >> 0x0 >> 0xfffffffef9de6064: __RTTI__1nFMyYYY4nMConstantPool___+0x0014: illtrap >> 0xaf0 >> 0xfffffffef9de6068: __RTTI__1nFMyYYY4nMConstantPool___+0x0018: ldsb >> [%o7 - 3854], %g7 >> 0xfffffffef9de606c: __RTTI__1nFMyYYY4nMConstantPool___+0x001c: sethi >> %hi(0x7612ac00), %l1 >> 0xfffffffef9de6070: __RTTI__1nFMyYYY4nMConstantPool___+0x0020: ldstub >> [%i3 + 1076], %o4 >> 0xfffffffef9de6074: __RTTI__1nFMyYYY4nMConstantPool___+0x0024: be,a >> 0xfffffffefa526810 >> >> Thanks >> - Ioi
