Capstone reporting operand 0 as READ, not WRITTEN for fstp instructions on current master.
$ ./cstool -d x64 "0xdd 0xd9"
0 dd d9 fstp st(1)
Prefix:0x00 0x00 0x00 0x00
Opcode:0xdd 0x00 0x00 0x00
rex: 0x0
addr_size: 8
modrm: 0xd9
disp: 0x0
sib: 0x0
op_count: 1
operands[0].type: REG = st(1)
operands[0].size: 10
operands[0].access: READ
Registers read: st(1)
Registers modified: fpsw
EFLAGS: MOD_CF PRIOR_SF PRIOR_AF PRIOR_PF
$ ./cstool -d x64 "0xdb 0x7c 0x24 0x40"
0 db 7c 24 40 fstp xword ptr [rsp + 0x40]
Prefix:0x00 0x00 0x00 0x00
Opcode:0xdb 0x00 0x00 0x00
rex: 0x0
addr_size: 8
modrm: 0x7c
disp: 0x40
sib: 0x24
sib_base: rsp
sib_scale: 1
op_count: 1
operands[0].type: MEM
operands[0].mem.base: REG = rsp
operands[0].mem.disp: 0x40
operands[0].size: 10
operands[0].access: READ
Registers read: rsp
Registers modified: fpsw
FPU_FLAGS: MOD_C1 UNDEF_C0 UNDEF_C2 UNDEF_C3
Groups: fpu
$ git branch
* master
Capstone reporting operand 0 as READ, not WRITTEN for fstp instructions on current master.