[FFADO-devel] Problem returning GuidString from ConfigRom

[Alaney D. <27...@al...>]

Hi all

While testing the mlan implementation i hit on this

*** Program received signal SIGABRT (Aborted) ***
*** glibc detected *** 
/home/alien/Projects/ffado-2/tests/ffado-test: free(): invalid next size 
(fast): 0x00000000006394e0 ***
/lib64/libc.so.6[0x3b3da76d63]
/usr/lib/libffado.so.2(_ZNK9ConfigRom13getGuidStringEv+0x88)[0x7ffff7c071ce]
/usr/lib/libffado.so.2(_ZN11FFADODevice7getNameEv+0x37)[0x7ffff7bffb33]
/usr/lib/libffado.so.2(_ZN7Control9Container10addElementEPNS_7ElementE+0xdc)[0x7ffff7c4bd3e]
/usr/lib/libffado.so.2(_ZN13DeviceManager8discoverEbb+0x17b1)[0x7ffff7bf3f15]

at the start I thought it was problem with addElement but after further 
debugging I found that is free that is making the SIGABRT. It's not 
missing a malloc in the following code? I commented free.

const std::string
ConfigRom::getGuidString() const
{
     char* buf;
     asprintf( &buf, "%08x%08x",
               ( unsigned int ) ( getGuid() >> 32 ),
               ( unsigned int ) ( getGuid() & 0xffffffff ) );
     std::string result = buf;
     free( buf );
     return result;
}

Regards
Alaney