Issues

• Function constructor not working right

  bugderived typesmedium prioritysemantics
  lfortran/lfortran#14488 · Filter by author jacobwilliams opened on Oct 10, 2026
  2

• Compile-time error on double-precision arithmetic when building Fiats for GPUs

  enhancementGPUmedium priority
  lfortran/lfortran#14485 · Filter by author rouson opened on Oct 10, 2026
  1

• Procedure pointer component with assumed-length character dummy fails ASR verify after string_length_arguments

  asr passbugderived typesmedium priorityprocedure pointersstrings
  lfortran/lfortran#14483 · Filter by author Jainam-not-a-robot opened on Oct 10, 2026

• Assert in create_gep2 when passing an allocatable character array component to a type(*), dimension(..) dummy

  arraysbugderived typesllvmmedium prioritystrings
  lfortran/lfortran#14481 · Filter by author Jainam-not-a-robot opened on Oct 10, 2026
  

• Procedure pointer with interface result r(k) associated with a function returning r(2): LLVM verification fails ("Stored value type does not match pointer operand type")

  better error messagebugerror not reportedllvmmedium priorityprocedure pointers
  lfortran/lfortran#14480 · Filter by author certik opened on Oct 10, 2026

• Character function result len=nn(2) with a use-associated nn: ASR verify fails when the caller has a local variable named nn

  asr passbugmedium priority
  lfortran/lfortran#14479 · Filter by author certik opened on Oct 10, 2026

• Components t%a_b and t_a%b share one imported symbol 1_t_a_b: ASR verify fails ("'t_a' has no member named 'a_b'")

  asrbugderived typesmedium priority
  lfortran/lfortran#14478 · Filter by author certik opened on Oct 10, 2026

• FortranEvaluator SAVE class pointer tests hang on Windows

  bugllvmmedium priorityOOP
  lfortran/lfortran#14476 · Filter by author certik opened on Oct 10, 2026
  1

• Separate module procedure with a procedure dummy whose interface has a module-variable array bound fails ASR verification (__lcompilers_get_n cannot point outside of its symbol table)

  arraysasrbugICEmedium priorityprocedure pointerssemantics
  lfortran/lfortran#14472 · Filter by author certik opened on Oct 10, 2026

• Invalid LLVM IR (mistyped vtable finalizer load) when deallocating a class(*) allocatable array (llvm-as rejects)

  arraysbugfinalizationllvmmedium priorityOOP
  lfortran/lfortran#14469 · Filter by author certik opened on Oct 10, 2026

• select type inside select rank on an assumed-rank class(t) dummy: wrong size (class is) / create_gep2 assert (type is)

  arraysbugderived typesICEllvmmedium priorityOOP
  lfortran/lfortran#14468 · Filter by author certik opened on Oct 10, 2026

• select type on an explicit-shape class(t) dummy p(n): ASR verify error (class is) / garbage bounds (type is)

  arraysasrbugderived typesllvmmedium priorityOOP
  lfortran/lfortran#14467 · Filter by author certik opened on Oct 10, 2026

• --realloc-lhs-arrays: a = p, where pointer p points into allocatable a, reads p after a is reallocated (wrong values)

  arraysbugmedium priority
  lfortran/lfortran#14465 · Filter by author certik opened on Oct 10, 2026

• Vector-subscripted class(*) allocatable array passed to an elemental function: AssertFailed in make_FunctionCall_t_util

  arraysbugICElow priorityOOP
  lfortran/lfortran#14464 · Filter by author certik opened on Oct 10, 2026

• v = g(v(3:1:-1)) with a polymorphic allocatable array v and elemental g: temporary copy of the section ignores the dynamic type (heap overflow / false "not allocated")

  arraysbugderived typesllvmmedium priorityOOP
  lfortran/lfortran#14463 · Filter by author certik opened on Oct 10, 2026

• Intrinsic assignment to an allocatable array does not call a rank-1 final subroutine

  arraysbugderived typesfinalizationmedium priority
  lfortran/lfortran#14462 · Filter by author certik opened on Oct 10, 2026

• class(*), allocatable array assigned cshift(...): ASR verify "Array of classes can't be of physical type FixedSizeArray"

  arraysasr passbugICEintrinsicmedium priorityOOP
  lfortran/lfortran#14461 · Filter by author certik opened on Oct 10, 2026

• class(*), allocatable array assigned pack/sum(dim=)/matmul/maxloc: "Target is an array, it should be scalar"

  arraysbugintrinsicllvmmedium priorityOOP
  lfortran/lfortran#14460 · Filter by author certik opened on Oct 10, 2026

• c_funloc of an array-valued module function whose result bound is a use-associated module variable fails ASR verification (__lcompilers_get_n cannot point outside of its symbol table)

  arraysasrbugICEmedium priority
  lfortran/lfortran#14459 · Filter by author certik opened on Oct 10, 2026

• Mark synthetic COMMON-block modules in ASR instead of by the file_common_block_ name prefix

  asrllvmlow priorityrefactor
  lfortran/lfortran#14458 · Filter by author certik opened on Oct 10, 2026

• Extending a COMMON block loaded from a modfile does not re-save its layout: "ExternalSymbol cannot be resolved" in the next file

  bugICEmedium prioritysemanticsseparate compilation
  lfortran/lfortran#14457 · Filter by author certik opened on Oct 10, 2026

• --show-fortran drops the lower bounds in ALLOCATE: allocate(a(0:3)) is printed as allocate(a(4))

  bugFortranlow priority
  lfortran/lfortran#14455 · Filter by author certik opened on Oct 10, 2026

• findloc(m, v, dim=1) on an allocatable array: ICE "FindLoc not handled yet in set_allocation_size"

  arraysasr passbugICEintrinsicmedium priority
  lfortran/lfortran#14454 · Filter by author certik opened on Oct 10, 2026

• c = cshift(p, 2) with a pointer array argument and an unallocated allocatable c segfaults (also eoshift, pack)

  arraysbugintrinsicmedium priority
  lfortran/lfortran#14453 · Filter by author certik opened on Oct 10, 2026

• lbound of an elemental array expression (a+1, abs(a), merge(...)) returns the operand's lower bound instead of 1

  arraysbugintrinsicmedium prioritysemantics
  lfortran/lfortran#14452 · Filter by author certik opened on Oct 10, 2026