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author | charlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-03-29 12:03:27 +0000 |
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committer | charlet <charlet@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-03-29 12:03:27 +0000 |
commit | fa7497e853a70dd5d253a1313d0dfa7ddbc02eec (patch) | |
tree | b41024c63720bbb6fd3edef3c99d72097d058a4e /gcc/ada/exp_ch5.adb | |
parent | 611a00932367c28e71b5682cb244fb548eeac5e7 (diff) | |
download | gcc-fa7497e853a70dd5d253a1313d0dfa7ddbc02eec.tar.gz |
2004-03-29 Javier Miranda <miranda@gnat.com>
* checks.adb (Null_Exclusion_Static_Checks): New subprogram
(Install_Null_Excluding_Check): Local subprogram that determines whether
an access node requires a runtime access check and if so inserts the
appropriate run-time check.
(Apply_Access_Check): Call Install_Null_Excluding check if required
(Apply_Constraint_Check): Call Install_Null_Excluding check if required
* checks.ads: (Null_Exclusion_Static_Checks): New subprogram
* einfo.ads: Fix typo in comment
* exp_ch3.adb (Build_Assignment): Generate conversion to the
null-excluding type to force the corresponding run-time check.
(Expand_N_Object_Declaration): Generate conversion to the null-excluding
type to force the corresponding run-time check.
* exp_ch5.adb (Expand_N_Assignment_Statement): Generate conversion to
the null-excluding type to force the corresponding run-time check.
* exp_ch6.adb (Expand_Call): Do not generate the run-time check in
case of access types unless they have the null-excluding attribute.
* sprint.adb (Sprint_Node_Actual): Give support to the null-exclusing
part.
* exp_util.ads: Fix typo in comment
* par.adb (P_Null_Exclusion): New subprogram
(P_Subtype_Indication): New formal that indicates if the null-excluding
part has been scanned-out and it was present
* par-ch3.adb, par-ch4.adb, par-ch6.adb: Give support to AI-231
* sem_aggr.adb: (Check_Can_Never_Be_Null): New subprogram
(Aggregate_Constraint_Checks): Generate conversion to the null-excluding
type to force the corresponding run-time check
(Resolve_Aggregate): Propagate the null-excluding attribute to the array
components
(Resolve_Array_Aggregate): Carry out some static checks
(Resolve_Record_Aggregate.Get_Value): Carry out some static check
* sem_ch3.adb (Access_Definition): In Ada 0Y the Can_Never_Be_Null
attribute must be set only if specified by means of the null-excluding
part. In addition, we must also propagate the access-constant attribute
if present.
(Access_Subprogram_Declaration, Access_Type_Declaration,
Analyze_Component_Declaration, Analyze_Object_Declaration,
Array_Type_Declaration, Process_Discriminants,
Analyze_Subtype_Declaration): Propagate the null-excluding attribute
and carry out some static checks.
(Build_Derived_Access_Type): Set the null-excluding attribute
(Derived_Type_Declaration, Process_Subtype): Carry out some static
checks.
* sem_ch4.adb (Analyze_Allocator): Carry out some static checks
* sem_ch5.adb (Analyze_Assignment): Carry out some static checks
* sem_ch6.adb (Process_Formals): Carry out some static checks.
(Set_Actual_Subtypes): Generate null-excluding subtype if the
null-excluding part was present; it is not required to be done here in
case of anonymous access types.
(Set_Formal_Mode): Ada 0Y allows anonymous access to have the null
value.
* sem_res.adb (Resolve_Actuals): Carry out some static check
(Resolve_Null): Allow null in anonymous access
* sinfo.adb: New subprogram Null_Exclusion_Present
All_Present and Constant_Present available on access_definition nodes
* sinfo.ads: New flag Null_Exclusion_Present on subtype_declaration,
object_declaration, derived_type_definition, component_definition,
discriminant_specification, access_to_object_definition,
access_function_definition, allocator, access_procedure_definition,
access_definition, parameter_specification, All_Present and
Constant_Present flags available on access_definition nodes.
2004-03-29 Robert Dewar <dewar@gnat.com>
* fname.adb, fname.ads, fname-sf.adb, fname-uf.adb, fname-uf.ads,
gnat1drv.adb, lib.adb, lib.ads, lib-load.adb, lib-writ.adb,
opt.ads, osint.adb, osint.ads, osint-c.adb, par.adb,
par-ch10.adb, par-load.adb, par-prag.adb, sfn_scan.adb,
sfn_scan.ads, sinput-l.adb, sinput-l.ads, switch-c.adb,
sem_prag.adb: Updates to handle multiple units/file
* par.adb: Change test for s-rpc to s-rp for detecting rpc and children
* par.adb, memtrack.adb, prj-makr.adb, prj-part.adb,
sem_util.adb: Minor reformatting
* sem_ch12.adb: Add comment for previous change
2004-03-29 Laurent Pautet <pautet@act-europe.fr>
* osint.adb (Executable_Prefix): Set Exec_Name to the current
executable name when not initialized. Otherwise, use its current value.
* osint.ads (Exec_Name): Move Exec_Name from body to spec in order to
initialize it to another executable name than the current one. This
allows to configure paths for an executable name (gnatmake) different
from the current one (gnatdist).
2004-03-29 Ed Schonberg <schonberg@gnat.com>
* exp_ch6.adb (Expand_Call): A call to a function declared in the
current unit cannot be inlined if it appears in the body of a withed
unit, to avoid order of elaboration problems in gigi.
* exp_ch9.adb (Build_Protected_Sub_Specification): Generate debugging
information for protected (wrapper) operation as well, to simplify gdb
use.
* sem_ch6.adb (Analyze_Subprogram_Body): For a private operation in a
protected body, indicate that the entity for the generated spec comes
from source, to ensure that references are properly generated for it.
(Build_Body_To_Inline): Do not inline a function that returns a
controlled type.
* sem_prag.adb (Process_Convention): If subprogram is overloaded, only
apply convention to homonyms that are declared explicitly.
* sem_res.adb (Make_Call_Into_Operator): If the operation is a function
that renames an equality operator and the operands are overloaded,
resolve them with the declared formal types, before rewriting as an
operator.
2004-03-29 GNAT Script <nobody@gnat.com>
* Make-lang.in: Makefile automatically updated
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@80055 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ada/exp_ch5.adb')
-rw-r--r-- | gcc/ada/exp_ch5.adb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ada/exp_ch5.adb b/gcc/ada/exp_ch5.adb index a08cd1f145c..08ec7d507b5 100644 --- a/gcc/ada/exp_ch5.adb +++ b/gcc/ada/exp_ch5.adb @@ -1541,6 +1541,19 @@ package body Exp_Ch5 is (Expression (Rhs), Designated_Type (Etype (Lhs))); end if; + -- Ada 0Y (AI-231): Generate conversion to the null-excluding + -- type to force the corresponding run-time check + + if Is_Access_Type (Typ) + and then ((Is_Entity_Name (Lhs) + and then Can_Never_Be_Null (Entity (Lhs))) + or else Can_Never_Be_Null (Etype (Lhs))) + then + Rewrite (Rhs, Convert_To (Etype (Lhs), + Relocate_Node (Rhs))); + Analyze_And_Resolve (Rhs, Etype (Lhs)); + end if; + -- If we are assigning an access type and the left side is an -- entity, then make sure that Is_Known_Non_Null properly -- reflects the state of the entity after the assignment |