Issues

• Crash when emulating legacy CPU code for retro speech synthesizers on 64-bit Windows

  unicorn-engine/unicorn#2439 · Filter by author losmasgrandes198 opened on Oct 18, 2026

• [M68K] Valid 16-bit arithmetic instructions trigger UC_ERR_EXCEPTION (Unicorn 2.1.4)

  unicorn-engine/unicorn#2434 · Filter by author hiroshige1980 opened on Oct 16, 2026

• win32 Python wheels for Python 3.14

  unicorn-engine/unicorn#2431 · Filter by author occasional-contributor opened on Oct 13, 2026

• aarch64 host: SIGILL from tcg_out_addsub2 on a constant subtraction (QEMU 707b45a247 not backported)

  unicorn-engine/unicorn#2430 · Filter by author Dracyr opened on Oct 10, 2026

• Segfault (RIP=0, NULL function pointer call) in sparc/sparc64 emulation — single guest ADDX/SUBX instruction reaches NULL compute_c entry because CPU state is never reset

  unicorn-engine/unicorn#2425 · Filter by author wildoranges opened on Oct 4, 2026

• ARM64 USHL .2D mishandles upper bytes of negative shift counts on i686

  unicorn-engine/unicorn#2423 · Filter by author Lqm1 opened on Oct 2, 2026

• ARM64 USHL .2D produces incorrect results on i686 hosts with AVX2

  unicorn-engine/unicorn#2421 · Filter by author Lqm1 opened on Oct 2, 2026

• MIPS: incorrect BZHI - missing qemu patch

  unicorn-engine/unicorn#2419 · Filter by author toby-bro opened on Sep 28, 2026

• [Feature Request] Improve Windows-native host/target header generation for Android cross-compilation

  unicorn-engine/unicorn#2407 · Filter by author mrpso opened on Aug 29, 2026

• Suggestions for improving SECURITY.md

  unicorn-engine/unicorn#2404 · Filter by author unknown-1-0 opened on Aug 21, 2026

• RISC-V: allow guest trap handlers to receive exceptions

  unicorn-engine/unicorn#2402 · Filter by author Kreijstal opened on Aug 20, 2026

• RISC-V: mret sets mstatus.MPP=U on harts without U-mode

  unicorn-engine/unicorn#2391 · Filter by author carlosqwqqwq opened on Aug 12, 2026

• RISC-V: execution starts from an odd PC (IALIGN=16 violation)

  unicorn-engine/unicorn#2390 · Filter by author carlosqwqqwq opened on Aug 12, 2026
  2

• RISC-V: D-width atomic instructions retire on harts without the A extension

  unicorn-engine/unicorn#2389 · Filter by author carlosqwqqwq opened on Aug 12, 2026

• RISC-V: fsgnj.d/fmv.d retire without F/D extension

  unicorn-engine/unicorn#2388 · Filter by author carlosqwqqwq opened on Aug 12, 2026
  6

• RISC-V: U-mode hpmcounter* reads retire even with mcounteren=0

  unicorn-engine/unicorn#2387 · Filter by author carlosqwqqwq opened on Aug 12, 2026

• m68k: reg_read(UC_M68K_REG_SR) silently destroys the guest's condition codes (after any reg_write of SR)

  unicorn-engine/unicorn#2380 · Filter by author cwright7101 opened on Aug 4, 2026

• m68k: rte never completes — raises EXCP_RTE (0x100) forever, PC and A7 unchanged

  unicorn-engine/unicorn#2379 · Filter by author cwright7101 opened on Aug 4, 2026

• question about TLB-lookups with UC_TLB_VIRTUAL / weird lookup

  unicorn-engine/unicorn#2376 · Filter by author kittennbfive opened on Jul 28, 2026
  2

• Memory access rights ignored unless mem hook is set

  unicorn-engine/unicorn#2369 · Filter by author boborjan2 opened on Jul 22, 2026
  13

• writes to readonly mem get discarded when MEM_WRITE_PROT hook returns true

  unicorn-engine/unicorn#2368 · Filter by author boborjan2 opened on Jul 21, 2026
  3

• x86 self modifying code regression broken

  unicorn-engine/unicorn#2367 · Filter by author boborjan2 opened on Jul 20, 2026
  18

• Next release

  unicorn-engine/unicorn#2356 · Filter by author wtdcode opened on Jul 4, 2026

• TriCore: ld.bu with base+offset pre/post-increment addressing sign-extends the byte (should zero-extend)

  bugqemu-bug
  unicorn-engine/unicorn#2348 · Filter by author ionutkep opened on Jun 25, 2026
  3

• MIPS: ll/lld raise spurious EXCP_AdEL above useg under UC_TLB_VIRTUAL

  unicorn-engine/unicorn#2345 · Filter by author retrocpugeek opened on Jun 23, 2026