Program received signal SIGSEGV, Segmentation fault.
0x75fee7c2 in strlen () from C:\WINDOWS\SysWOW64\msvcrt.dll
(gdb) bt
#0  0x75fee7c2 in strlen () from C:\WINDOWS\SysWOW64\msvcrt.dll
#1  0x00402c1f in SoundFont::writePreset (this=0x28fe50, zoneIdx=1054, preset=0x28fd30) at C:\Git_packages\sftools\sfont.cpp:948
#2  0x004049cc in SoundFont::writePhdr (this=this@entry=0x28fe50) at C:\Git_packages\sftools\sfont.cpp:936
#3  0x0040a89a in SoundFont::write (this=0x28fe50, f=0x28fe3c) at C:\Git_packages\sftools\sfont.cpp:785
#4  0x004181f4 in main (argc=<optimized out>, argv=0xa03220) at C:\Git_packages\sftools\sfconvert.cpp:130

(gdb) up
#1  0x00402c1f in SoundFont::writePreset (this=0x28fe50, zoneIdx=1054, preset=0x28fd30) at C:\Git_packages\sftools\sfont.cpp:948
948                 memcpy(name, preset->name, strlen(preset->name));

(gdb) print preset->name
$1 = 0x70726148 <error: Cannot access memory at address 0x70726148>

(gdb) print preset
$2 = (const Preset *) 0x28fd30

(gdb) list
943     void SoundFont::writePreset(int zoneIdx, const Preset* preset)
944           {
945           char name[20];
946           memset(name, 0, 20);
947           if (preset->name)
948                 memcpy(name, preset->name, strlen(preset->name));
949           write(name, 20);
950           writeWord(preset->preset);
951           writeWord(preset->bank);
952           writeWord(zoneIdx);