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fortran added a new -Wexternal-argument-mismatch option, but the
lang.opt.urls file wasn't regenerated.
Fixes: 21ca9153ebe5 ("C prototypes for external arguments; add warning for mismatch.")
gcc/fortran/ChangeLog:
* lang.opt.urls: Regenerated.
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differs [PR104684]
PR fortran/104684
gcc/fortran/ChangeLog:
* trans-array.cc (gfc_conv_expr_descriptor): Look at the
lang-specific akind and do a view convert when only the akind
attribute differs between pointer and allocatable array.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray/ptr_comp_6.f08: New test.
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The problem was that we were not handling external dummy arguments
with -fc-prototypes-external. In looking at this, I found that we
were not warning about external procedures with different argument
lists. This can actually be legal (see the two test cases) but
creates a problem for the C prototypes: If we have something like
subroutine foo(a,n)
external a
if (n == 1) call a(1)
if (n == 2) call a(2,3)
end subroutine foo
then, pre-C23, we could just have written out the prototype as
void foo_ (void (*a) (), int *n);
but this is illegal in C23. What to do? I finally chose to warn
about the argument mismatch, with a new option. Warn only because the
code above is legal, but include in -Wall because such code seems highly
suspect. This option is also implied in -fc-prototypes-external. I also
put a warning in the generated header file in that case, so users
have a chance to see what is going on (especially since gcc now
defaults to C23).
gcc/fortran/ChangeLog:
PR fortran/119049
PR fortran/119074
* dump-parse-tree.cc (seen_conflict): New static varaible.
(gfc_dump_external_c_prototypes): Initialize it. If it was
set, write out a warning that -std=c23 will not work.
(write_proc): Move the work of actually writing out the
formal arglist to...
(write_formal_arglist): New function. Handle external dummy
parameters and their argument lists. If there were mismatched
arguments, output an empty argument list in pre-C23 style.
* gfortran.h (struct gfc_symbol): Add ext_dummy_arglist_mismatch
flag and formal_at.
* invoke.texi: Document -Wexternal-argument-mismatch.
* lang.opt: Put it in.
* resolve.cc (resolve_function): If warning about external
argument mismatches, build a formal from actual arglist the
first time around, and later compare and warn.
(resolve_call): Likewise
gcc/testsuite/ChangeLog:
PR fortran/119049
PR fortran/119074
* gfortran.dg/interface_55.f90: New test.
* gfortran.dg/interface_56.f90: New test.
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PR fortran/103391
gcc/fortran/ChangeLog:
* trans-expr.cc (gfc_trans_assignment_1): Do not use poly assign
for pointer arrays on lhs (as it is done for allocatables
already).
gcc/testsuite/ChangeLog:
* gfortran.dg/assign_12.f90: New test.
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PR fortran/77872
gcc/fortran/ChangeLog:
* trans-expr.cc (gfc_get_tree_for_caf_expr): Pick up token from
decl when it is present there for class types.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray/class_1.f90: New test.
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PR fortran/77872
gcc/fortran/ChangeLog:
* trans-expr.cc (gfc_conv_procedure_call): Use attr instead of
doing type check and branching for BT_CLASS.
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PR fortran/101577
gcc/fortran/ChangeLog:
* symbol.cc (verify_bind_c_derived_type): Generate error message
for derived type with no components in standard conformance mode,
indicating that this is a GNU extension.
gcc/testsuite/ChangeLog:
* gfortran.dg/empty_derived_type.f90: Adjust dg-options.
* gfortran.dg/empty_derived_type_2.f90: New test.
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Fix a regression were adding a temporary variable inserted a copy of the
argument to the elemental function. That copy was then later used to
free allocated memory, but the freeing was not tracked in the source
array correctly.
PR fortran/118747
gcc/fortran/ChangeLog:
* trans-array.cc (gfc_trans_array_ctor_element): Remove copy to
temporary variable.
* trans-expr.cc (gfc_conv_procedure_call): Use references to
array members instead of copies when freeing after use.
Formatting fix.
gcc/testsuite/ChangeLog:
* gfortran.dg/alloc_comp_auto_array_4.f90: New test.
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gcc/fortran/ChangeLog
* intrinsic.texi: Fix inconsistent capitalization of argument
names and other minor copy-editing.
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As noted in the issue, the version of the standard an intrinsic was
introduced in is usually not the second-most-important thing a user
needs to know. This patch moves it from near the beginning of each
section towards the end, just ahead of "See also".
gcc/fortran/ChangeLog
PR fortran/47928
* intrinsic.texi: Move the "Standard" subheading farther down.
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As suggested in the issue, it makes more sense to describe the function
call argument syntax before talking about the arguments in the description.
gcc/fortran/ChangeLog
PR fortran/47928
* gfortran.texi: Move all the "Syntax" subheadings ahead of
"Description", and rename to "Synopsis".
* intrinsic.texi: Likewise.
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This is a preparatory patch for the main changes requested in the issue.
gcc/fortran/ChangeLog
PR fortran/47928
* intrinsic.texi: Put a blank line between "@item @emph{}"
subheadings, but not more than one.
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This is a preparatory patch for the main documentation changes requested
in the issue.
gcc/fortran/ChangeLog
PR fortran/47928
* gfortran.texi: Consistently use "@emph{Notes}:" instead of
other spellings.
* intrinsic.texi: Likewise. Also fix an inconsistent capitalization
and remove a redundant "Standard" entry.
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gcc/fortran/ChangeLog:
* match.cc (gfc_match_nullify): Free matched expression when
cleaning up.
* primary.cc (match_variable): Initialize result to NULL.
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PR fortran/118730
gcc/fortran/ChangeLog:
* resolve.cc: Mark unused derived type variable with finalizers
referenced to execute finalizer when leaving scope.
gcc/testsuite/ChangeLog:
* gfortran.dg/class_array_15.f03: Remove unused variable.
* gfortran.dg/coarray_poly_7.f90: Adapt scan-tree-dump expr.
* gfortran.dg/coarray_poly_8.f90: Same.
* gfortran.dg/finalize_60.f90: New test.
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Fix ICE when associating a pointer to void (c_ptr) by looking at the
compatibility of the type hierarchy.
PR fortran/118789
gcc/fortran/ChangeLog:
* trans-stmt.cc (trans_associate_var): Compare pointed to types when
expr to associate is already a pointer.
gcc/testsuite/ChangeLog:
* gfortran.dg/associate_73.f90: New test.
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With vectorial shaped datatypes like e.g. complex numbers, fold_convert
inserts a SAVE_EXPR. Using that on the lhs in an assignment prevented
the update of the variable, when in a coarray.
PR fortran/108233
gcc/fortran/ChangeLog:
* trans-expr.cc (gfc_trans_assignment_1): Remove SAVE_EXPR on lhs.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray/complex_1.f90: New test.
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Look at the formal arguments generated type in the function declaration
to figure if an argument is a descriptor arrays. Fix handling of class
types while splitting coarray expressions.
PR fortran/107635
gcc/fortran/ChangeLog:
* coarray.cc (fixup_comp_refs): For class types set correct
component (class) type.
(split_expr_at_caf_ref): Provide location.
* trans-intrinsic.cc (conv_caf_send_to_remote): Look at
generated formal argument and not declared one to detect
descriptor arrays.
(conv_caf_sendget): Same.
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gcc/fortran/ChangeLog:
PR fortran/107635
* trans-intrinsic.cc (conv_caf_sendget): Use the size of data
transferred between the two images and not the descritor's size.
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PR fortran/48958
gcc/fortran/ChangeLog:
* trans-array.cc (gfc_trans_deferred_array): Initialize the data
component of non-saved pointers when -fcheck=pointer is set.
gcc/testsuite/ChangeLog:
* gfortran.dg/pointer_init_13.f90: New test.
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Improve the internal and debug representation of assumed-rank arrays by
honoring the pointer and allocatable property.
Permit obtaining the array size from only a tree (via the array descriptor)
besides obtaining it from the gfc_expr's array spec. This will be used
by a follow up OpenMP patch for mapping derived types with allocatable
components.
gcc/fortran/ChangeLog:
* trans-array.cc (gfc_full_array_size): Obtain the rank from
the array descriptor for assumed rank.
(gfc_tree_array_size): Likewise; permit expr = NULL to operate
only the tree.
(gfc_conv_descriptor_stride_get): Update for added assumed-rank
array types.
* trans-openmp.cc (gfc_omp_finish_clause): Likewise.
* trans-types.cc (gfc_build_array_type, gfc_get_derived_type,
gfc_get_array_descr_info): Likewise.
* trans.h (enum gfc_array_kind): Add
GFC_ARRAY_ASSUMED_RANK_{ALLOCATABLE,POINTER{,_CONT}}.
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gcc/fortran/ChangeLog:
PR fortran/107635
* gfortran.texi: Remove deprecated functions from documentation.
* trans-decl.cc (gfc_build_builtin_function_decls): Remove
decprecated function decls.
* trans-intrinsic.cc (gfc_conv_intrinsic_exponent): Remove
deprecated/no longer needed routines.
* trans.h: Remove unused decls.
libgfortran/ChangeLog:
* caf/libcaf.h (_gfortran_caf_get): Removed because deprecated.
(_gfortran_caf_send): Same.
(_gfortran_caf_sendget): Same.
(_gfortran_caf_send_by_ref): Same.
* caf/single.c (assign_char4_from_char1): Same.
(assign_char1_from_char4): Same.
(convert_type): Same.
(defined): Same.
(_gfortran_caf_get): Same.
(_gfortran_caf_send): Same.
(_gfortran_caf_sendget): Same.
(copy_data): Same.
(get_for_ref): Same.
(_gfortran_caf_get_by_ref): Same.
(send_by_ref): Same.
(_gfortran_caf_send_by_ref): Same.
(_gfortran_caf_sendget_by_ref): Same.
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Add the last missing coarray data manipulation routine using remote
accessors.
gcc/fortran/ChangeLog:
PR fortran/107635
* coarray.cc (rewrite_caf_send): Rewrite to
transfer_between_remotes when both sides of the assignment have
a coarray.
(coindexed_code_callback): Prevent duplicate rewrite.
* gfortran.texi: Add documentation for transfer_between_remotes.
* intrinsic.cc (add_subroutines): Add intrinsic symbol for
caf_sendget to allow easy rewrite to transfer_between_remotes.
* trans-decl.cc (gfc_build_builtin_function_decls): Add
prototype for transfer_between_remotes.
* trans-intrinsic.cc (conv_caf_vector_subscript_elem): Mark as
deprecated.
(conv_caf_vector_subscript): Same.
(compute_component_offset): Same.
(conv_expr_ref_to_caf_ref): Same.
(conv_stat_and_team): Extract stat and team from expr.
(gfc_conv_intrinsic_caf_get): Use conv_stat_and_team.
(conv_caf_send_to_remote): Same.
(has_ref_after_cafref): Mark as deprecated.
(conv_caf_sendget): Translate to transfer_between_remotes.
* trans.h: Add prototype for transfer_between_remotes.
libgfortran/ChangeLog:
* caf/libcaf.h: Add prototype for transfer_between_remotes.
* caf/single.c: Implement transfer_between_remotes.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray_lib_comm_1.f90: Fix up scan_trees.
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Refactor to use send_to_remote instead of the slow send_by_ref.
gcc/fortran/ChangeLog:
PR fortran/107635
* coarray.cc (move_coarray_ref): Move the coarray reference out
of the given one. Especially when there is a regular array ref.
(fixup_comp_refs): Move components refs to a derived type where
the codim has been removed, aka a new type.
(split_expr_at_caf_ref): Correctly split the reference chain.
(remove_caf_ref): Simplify.
(create_get_callback): Fix some deficiencies.
(create_allocated_callback): Adapt to new signature of split.
(create_send_callback): New function.
(rewrite_caf_send): Rewrite a call to caf_send to
caf_send_to_remote.
(coindexed_code_callback): Treat caf_send and caf_sendget
correctly.
* gfortran.h (enum gfc_isym_id): Add SENDGET-isym.
* gfortran.texi: Add documentation for send_to_remote.
* resolve.cc (gfc_resolve_code): No longer generate send_by_ref
when allocatable coarray (component) is on the lhs.
* trans-decl.cc (gfc_build_builtin_function_decls): Add
caf_send_to_remote decl.
* trans-intrinsic.cc (conv_caf_func_index): Ensure the static
variables created are not in a block-scope.
(conv_caf_send_to_remote): Translate caf_send_to_remote calls.
(conv_caf_send): Renamed to conv_caf_sendget.
(conv_caf_sendget): Renamed from conv_caf_send.
(gfc_conv_intrinsic_subroutine): Branch correctly for
conv_caf_send and sendget.
* trans.h: Correct decl.
libgfortran/ChangeLog:
* caf/libcaf.h: Add/Correct prototypes for caf_get_from_remote,
caf_send_to_remote.
* caf/single.c (struct accessor_hash_t): Rename accessor_t to
getter_t.
(_gfortran_caf_register_accessor): Use new name of getter_t.
(_gfortran_caf_send_to_remote): New function for sending data to
coarray on a remote image.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray/send_char_array_1.f90: Extend test to
catch more cases.
* gfortran.dg/coarray_42.f90: Invert tests use, because no
longer a send is needed when local memory in a coarray is
allocated.
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Replace caf_is_present by caf_is_present_on_remote which is using a
dedicated callback for each object to test on the remote image.
gcc/fortran/ChangeLog:
PR fortran/107635
* coarray.cc (create_allocated_callback): Add creating remote
side procedure for checking allocation status of coarray.
(rewrite_caf_allocated): Rewrite ALLOCATED on coarray to use caf
routine.
(coindexed_expr_callback): Exempt caf_is_present_on_remote from
being rewritten again.
* gfortran.h (enum gfc_isym_id): Add caf_is_present_on_remote
id.
* gfortran.texi: Add documentation for caf_is_present_on_remote.
* intrinsic.cc (add_functions): Add caf_is_present_on_remote
symbol.
* trans-decl.cc (gfc_build_builtin_function_decls): Define
interface of caf_is_present_on_remote.
* trans-intrinsic.cc (gfc_conv_intrinsic_caf_is_present_remote):
Translate caf_is_present_on_remote.
(trans_caf_is_present): Remove.
(caf_this_image_ref): Remove.
(gfc_conv_allocated): Take out coarray treatment, because that
is rewritten to caf_is_present_on_remote now.
(gfc_conv_intrinsic_function): Handle caf_is_present_on_remote
calls.
* trans.h: Add symbol for caf_is_present_on_remote and remove
old one.
libgfortran/ChangeLog:
* caf/libcaf.h (_gfortran_caf_is_present_on_remote): Add new
function.
(_gfortran_caf_is_present): Remove deprecated one.
* caf/single.c (struct accessor_hash_t): Add function ptr access
for remote side call.
(_gfortran_caf_is_present_on_remote): Added.
(_gfortran_caf_is_present): Removed.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray/coarray_allocated.f90: Adapt to new method
of checking on remote image.
* gfortran.dg/coarray_lib_alloc_4.f90: Same.
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[PR107635]
Extract calls to non-pure or non-elemental functions from index
expressions on a coarray.
gcc/fortran/ChangeLog:
PR fortran/107635
* coarray.cc (get_arrayspec_from_expr): Treat array result of
function calls correctly.
(remove_coarray_from_derived_type): Prevent memory loss.
(add_caf_get_from_remote): Correct locus.
(find_comp): New function to find or create a new component in a
derived type.
(check_add_new_comp_handle_array): Handle allocatable arrays or
non-pure/non-elemental functions in indexes of coarrays.
(check_add_new_component): Use above function.
(create_get_parameter_type): Rename to
create_caf_add_data_parameter_type.
(create_caf_add_data_parameter_type): Renaming of variable and
make the additional data a coarray.
(remove_caf_ref): Factor out to reuse in other caf-functions.
(create_get_callback): Use function factored out, set locus
correctly and ensure a kind is set for parameters.
(add_caf_get_intrinsic): Rename to add_caf_get_from_remote and
rename some variables.
(coindexed_expr_callback): Skip over function created by the
rewriter.
(coindexed_code_callback): Filter some intrinsics not to
process.
(gfc_coarray_rewrite): Rewrite also contained functions.
* trans-intrinsic.cc (gfc_conv_intrinsic_caf_get): Reflect
changed order on caf_get_from_remote ().
libgfortran/ChangeLog:
* caf/libcaf.h (_gfortran_caf_register_accessor): Reflect
changed parameter order.
* caf/single.c (struct accessor_hash_t): Same.
(_gfortran_caf_register_accessor): Call accessor using a token
for accessing arrays with a descriptor on the source side.
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray_lib_comm_1.f90: Adapt scan expression.
* gfortran.dg/coarray/get_with_fn_parameter.f90: New test.
* gfortran.dg/coarray/get_with_scalar_fn.f90: New test.
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Factor out generation of code to get remote function index and to
create the additional data structure. Rename caf_get_by_ct to
caf_get_from_remote.
gcc/fortran/ChangeLog:
PR fortran/107635
* gfortran.texi: Rename caf_get_by_ct to caf_get_from_remote.
* trans-decl.cc (gfc_build_builtin_function_decls): Rename
intrinsic.
* trans-intrinsic.cc (conv_caf_func_index): Factor out
functionality to be reused by other caf-functions.
(conv_caf_add_call_data): Same.
(gfc_conv_intrinsic_caf_get): Use functions factored out.
* trans.h: Rename intrinsic symbol.
libgfortran/ChangeLog:
* caf/libcaf.h (_gfortran_caf_get_by_ref): Remove from ABI.
This function is replaced by caf_get_from_remote ().
(_gfortran_caf_get_remote_function_index): Use better name.
* caf/single.c (_gfortran_caf_finalize): Free internal data.
(_gfortran_caf_get_by_ref): Remove from public interface, but
keep it, because it is still used by sendget ().
gcc/testsuite/ChangeLog:
* gfortran.dg/coarray_lib_comm_1.f90: Adapt to renamed ABI
function.
* gfortran.dg/coarray_stat_function.f90: Same.
* gfortran.dg/coindexed_1.f90: Same.
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Add a rewriter to keep all expression tree that is not optimization
together. At the moment this is just a move from resolve.cc, but will
be extended to handle more cases where rewriting the expression tree may
be easier. The first use case is to extract accessors for coarray
remote image data access.
gcc/fortran/ChangeLog:
PR fortran/107635
* Make-lang.in: Add coarray.cc.
* coarray.cc: New file.
* gfortran.h (gfc_coarray_rewrite): New procedure.
* parse.cc (rewrite_expr_tree): Add entrypoint for rewriting
expression trees.
* resolve.cc (gfc_resolve_ref): Remove caf_lhs handling.
(get_arrayspec_from_expr): Moved to rewrite.cc.
(remove_coarray_from_derived_type): Same.
(convert_coarray_class_to_derived_type): Same.
(split_expr_at_caf_ref): Same.
(check_add_new_component): Same.
(create_get_parameter_type): Same.
(create_get_callback): Same.
(add_caf_get_intrinsic): Same.
(resolve_variable): Remove caf_lhs handling.
libgfortran/ChangeLog:
* caf/single.c (_gfortran_caf_finalize): Free memory preventing
leaks.
(_gfortran_caf_get_by_ct): Fix constness.
* caf/libcaf.h (_gfortran_caf_register_accessor): Fix constness.
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variant [PR115271]
On the extension side, it implements OpenMP 6.0's numeric values/ranges for
the adjust_args arguments, including 'omp_num_args'. And it adds parser
support for need_device_addr. It also implements the post-OpenMP-6.0
clarification of OpenMP spec Issue #4443 regarding type(c_ptr) with
dimension being invalid for need_device_ptr.
To be done: Adding full support for need_device_addr (optional, array
descriptor, ...).
On the invalid side, it removed a bogus c_ptr check that went through
all adjust_args without checking for need_device_ptr and the current scope.
And it finally also processes 'declare variant' in an INTERFACE block,
which is part of PR115271, but it does not handle .mod file yet - the
main issue tracked in that PR.
PR fortran/115271
gcc/fortran/ChangeLog:
* gfortran.h (gfc_omp_namelist): Change need_device_ptr to adj_args
union and add more flags.
* openmp.cc (gfc_match_omp_declare_variant,
gfc_resolve_omp_declare): For adjust_args, handle need_device_addr
and numeric values/ranges besides dummy argument names.
(resolve_omp_dispatch): Remove bogus a adjust_args check.
* trans-decl.cc (gfc_handle_omp_declare_variant): New.
(gfc_generate_module_vars, gfc_generate_function_code): Call it.
* trans-openmp.cc (gfc_trans_omp_declare_variant): Handle numeric
values/ranges besides dummy argument names.
gcc/testsuite/ChangeLog:
* gfortran.dg/gomp/adjust-args-1.f90: Update dg-.* expectations.
* gfortran.dg/gomp/adjust-args-2.f90: Likewise.
* gfortran.dg/gomp/adjust-args-2a.f90: Likewise.
* gfortran.dg/gomp/adjust-args-3.f90: Likewise.
* gfortran.dg/gomp/adjust-args-4.f90: Remove array from c_ptr.
* gfortran.dg/gomp/adjust-args-5.f90: Likewise.
* gfortran.dg/gomp/adjust-args-11.f90: Likewise. Add check that
INTERFACE is now handled in subroutines and in modules.
* gfortran.dg/gomp/adjust-args-13.f90: New test.
* gfortran.dg/gomp/adjust-args-14.f90: New test.
* gfortran.dg/gomp/adjust-args-15.f90: New test.
* gfortran.dg/gomp/declare-variant-21.f90: New test.
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exponentiation.
this patch is a variation of Jakub's patch in the PR, which
avoids overflow on the mask used for exponentiation and
fixes unsigned HOST_WIDE_INT. I tried testing this on
a POWER machine, but --with-build-config=bootstrap-ubsan
fails bootstrap there.
gcc/fortran/ChangeLog:
PR fortran/118862
* trans-expr.cc (gfc_conv_cst_int_power): Use functions for
unsigned wide integer.
(gfc_conv_cst_uint_power): Avoid generating the mask if it would
overflow an unsigned HOST_WIDE_INT. Format fixes.
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In the recent patch for dumping all attributes, there were
duplicates for attr->save, which is output via gfc_code2string
previously. This patch removes that double output.
gcc/fortran/ChangeLog:
* dump-parse-tree.cc (show_attr): Remove double output
of attr->save.
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For scalar OPTIONAL dummy arguments with the VALUE attribute, gfortran
passes a hidden flag to denote presence or absence of the actual argument
for intrinsic types. Extend this treatment to derived type (user-defined
as well as from intrinsic module ISO_C_BINDING).
PR fortran/118080
gcc/fortran/ChangeLog:
* gfortran.texi: Adjust documentation.
* trans-decl.cc (create_function_arglist): Adjust to pass hidden
presence flag also for derived type dummies with VALUE,OPTIONAL
attribute.
* trans-expr.cc (gfc_conv_expr_present): Expect hidden presence
flag also for derived type dummies with VALUE,OPTIONAL attribute.
(conv_cond_temp): Adjust to allow derived types.
(conv_dummy_value): Extend to handle derived type dummies with
VALUE,OPTIONAL attribute.
(gfc_conv_procedure_call): Adjust for actual arguments passed to
derived type dummies with VALUE,OPTIONAL attribute.
* trans-types.cc (gfc_get_function_type): Adjust fndecl for
hidden presence flag.
gcc/testsuite/ChangeLog:
* gfortran.dg/value_optional_2.f90: New test.
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Before this patch, gfortran was accepting invalid use of
type(c_ptr) in I/O statements. The fix affects several
existing test cases so no new test case needed.
Existing tests were modified to pass by either using the
transfer function to convert to an acceptable value or
using an assignment to a like type (non-I/O).
PR fortran/117430
gcc/fortran/ChangeLog:
* resolve.cc (resolve_transfer): Change gfc_notify_std to
gfc_error.
gcc/testsuite/ChangeLog:
* gfortran.dg/c_loc_test_17.f90: Use an assignment rather than
PRINT.
* gfortran.dg/c_ptr_tests_10.f03: Use a transfer function.
* gfortran.dg/c_ptr_tests_16.f90: Use an assignment.
* gfortran.dg/c_ptr_tests_9.f03: Use a transfer function.
* gfortran.dg/init_flag_17.f90: Likewise.
* gfortran.dg/pr32601_1.f03: Use an assignment.
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gcc/fortran/ChangeLog:
PR fortran/118159
* invoke.texi: Remove mention of defunct web site for Coco.
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The fix for PR 118845 introduced new checks, which in turn exposed
a case where the typespec information on a symbol generated symbol
was not set. This led to an apparent type of BT_UNKNOWN, and hence
an error. Fixed as obvoius and simple.
gcc/fortran/ChangeLog:
* frontend-passes.cc (check_externals_procedure): Copy
typespec from old to new symbol.
gcc/testsuite/ChangeLog:
* gfortran.dg/interface_54.f90: New test.
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