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testsuite/tests/afl-instrumentation always fails if AFL is installed but OCaml is not configured with --with-afl

testsuite

Status: Open.

#15046 In ocaml/ocaml;

· xavierleroy opened on Sep 7, 2026

On Windows, Unix.realpath returns a relative path when given an absolute UNC path.

windows

Status: Open.

#15044 In ocaml/ocaml;

· LaicepS opened on Sep 7, 2026

Stop-the-world barriers take seconds on Windows when a domain repeatedly enters and leaves a blocking section

multicore

PerformancePR or issues affecting runtime performance of the compiled programsPR or issues affecting runtime performance of the compiled programs

runtime-system

Status: Open.

#15042 In ocaml/ocaml;

· daniel-larraz opened on Sep 5, 2026

In-prefix tests fail in Windows CI

Status: Open.

#15040 In ocaml/ocaml;

· OlivierNicole opened on Sep 4, 2026

invalid unwind info in ocamlopt binaries in the stack reallocation path

Status: Open.

#15037 In ocaml/ocaml;

· alk opened on Sep 2, 2026

Runtime events spam during full major collection

Status: Open.

#15024 In ocaml/ocaml;

· ngorogiannis opened on Aug 27, 2026

Tsan fails when configured with both --enable-flambda and --enable-tsan

Status: Open.

#15014 In ocaml/ocaml;

· tmcgilchrist opened on Aug 20, 2026

Update "Polymorphism and its limitations" manual chapter for OCaml 5.5

documentation

Status: Open.

#15013 In ocaml/ocaml;

· Merlin04 opened on Aug 19, 2026

ocamldebug protocol clamps headers to 32 bits

Status: Open.

#15012 In ocaml/ocaml;

· lthls opened on Aug 19, 2026

runtime_events: constructor indices are wire format and the header version does not track them

Status: Open.

#15011 In ocaml/ocaml;

· tmcgilchrist opened on Aug 18, 2026

Atomic locs allow unsound writes to polymorphic record fields

Status: Open.

#14987 In ocaml/ocaml;

· rtjoa opened on Aug 5, 2026

int Atomic.t introduces polling points and calls to caml_atomic_fetch_add_field

Status: Open.

#14976 In ocaml/ocaml;

· edwintorok opened on Jul 31, 2026