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llvm-project/flang/lib/Semantics
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Peter Steinfeld 868187df21 [flang] Handle type-bound procedures with alternate returns 
If you specify a type-bound procedure with an alternate return, there
will be no symbol associated with that dummy argument.  In such cases,
the compiler's list of dummy arguments will contain a nullptr.  In our
analysis of the PASS arguments of type-bound procedures, we were
assuming that all dummy arguments had non-null symbols associated with
them and were using that assumption to get the name of the dummy
argument.  This caused the compiler to try to dereference a nullptr.

I fixed this by explicitly checking for a nullptr and, in such cases, emitting
an error message.  I also added tests that contain type-bound procedures with
alternate returns in both legal and illegal constructs to ensure that semantic
analysis is working for them.

Differential Revision: https://reviews.llvm.org/D98430
 		2021-03-11 10:20:34 -08:00
..
CMakeLists.txt [flang] Implement derived type description table encoding 2020-12-08 10:26:58 -08:00
assignment.cpp [flang][nfc] Fix comments, remove needless API, tweak script 2021-01-22 10:55:53 -08:00
assignment.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
attr.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
canonicalize-acc.cpp [flang][openacc] Add missing loop construct restriction and validity tests 2020-12-08 14:12:12 -05:00
canonicalize-acc.h [flang][openacc] Semantic checks for OpenACC 3.0 clauses validity 2020-07-14 20:44:35 -04:00
canonicalize-do.cpp [flang][NFC] Get formatting in sync with latest clang-format 2020-07-01 16:51:46 -07:00
canonicalize-do.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
canonicalize-omp.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
canonicalize-omp.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-acc-structure.cpp [flang][directive] Enforce basic semantic check for all clauses 2021-02-01 13:33:30 -05:00
check-acc-structure.h [flang][directive] Enforce basic semantic check for all clauses 2021-02-01 13:33:30 -05:00
check-allocate.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-allocate.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-arithmeticif.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-arithmeticif.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-call.cpp [flang] Improve shape & length characterization 2021-01-30 16:14:27 -08:00
check-call.h [flang] Document and use intrinsic subroutine argument intents 2020-10-20 14:09:46 +02:00
check-case.cpp [flang] Fix integer CASE constant typing 2020-09-01 10:59:35 -07:00
check-case.h [flang] Semantics for SELECT CASE 2020-03-27 12:02:11 -07:00
check-coarray.cpp [flang] Support for image selectors 2020-07-08 07:31:54 -07:00
check-coarray.h [flang] Support for image selectors 2020-07-08 07:31:54 -07:00
check-data.cpp [flang] Handle DATA initialization of EQUIVALENCE'd objects 2020-08-07 16:39:23 -07:00
check-data.h [flang] Handle DATA initialization of EQUIVALENCE'd objects 2020-08-07 16:39:23 -07:00
check-deallocate.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-deallocate.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-declarations.cpp [flang] Handle type-bound procedures with alternate returns 2021-03-11 10:20:34 -08:00
check-declarations.h [flang] Improve initializer semantics, esp. for component default values 2020-12-07 14:40:41 -08:00
check-directive-structure.h [flang][OpenMP] Add semantic check for occurrence of multiple list items in aligned clause for simd directive 2021-03-11 10:01:21 -05:00
check-do-forall.cpp [flang] Fix classification of shape inquiries in specification exprs 2021-01-13 10:05:14 -08:00
check-do-forall.h [flang] Fix crash on erroneous expressions 2020-06-05 08:46:43 -07:00
check-if-stmt.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-if-stmt.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-io.cpp [flang] Refine WhyNotModifiable() 2021-01-19 11:44:51 -08:00
check-io.h [flang] Check that various variables referenced in I/O statements may be defined 2020-08-25 12:06:18 -07:00
check-namelist.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-namelist.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-nullify.cpp [flang] Fix bad dereference of NULLIFY pointer object 2021-03-08 15:01:36 -08:00
check-nullify.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-omp-structure.cpp [flang][OpenMP] Add semantic check for occurrence of multiple list items in aligned clause for simd directive 2021-03-11 10:01:21 -05:00
check-omp-structure.h [Flang][OpenMP] Add semantic checks for OpenMP clauses. 2021-03-01 19:54:41 +05:30
check-purity.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-purity.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-return.cpp [flang][NFC] Add GetTopLevelUnitContaining functions 2020-12-02 10:28:49 -08:00
check-return.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-select-rank.cpp [flang]Semantics for SELECT RANK. 2020-05-08 08:52:31 +05:30
check-select-rank.h [flang]Semantics for SELECT RANK. 2020-05-08 08:52:31 +05:30
check-select-type.cpp [FLANG] Fix issues in SELECT TYPE construct when intrinsic type specification is specified in TYPE GUARD statement. 2020-08-03 09:24:42 +05:30
check-select-type.h [flang] Semantics for SELECT TYPE 2020-06-12 00:12:24 +05:30
check-stop.cpp [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
check-stop.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
compute-offsets.cpp [flang] Add TypeAndShape::MeasureElementSizeInBytes() 2021-02-02 15:15:20 -08:00
compute-offsets.h [flang] Implement STORAGE_SIZE(), SIZEOF(), C_SIZEOF() 2020-12-15 17:26:20 -08:00
data-to-inits.cpp [flang] Implement STORAGE_SIZE(), SIZEOF(), C_SIZEOF() 2020-12-15 17:26:20 -08:00
data-to-inits.h [flang] Handle DATA initialization of EQUIVALENCE'd objects 2020-08-07 16:39:23 -07:00
expression.cpp [flang] Warn about useless explicit typing of intrinsics 2021-02-17 13:13:59 -08:00
mod-file.cpp [flang] Improve "Error reading module file" error message 2021-02-11 11:08:12 -08:00
mod-file.h [flang] Semantic analysis for FINAL subroutines 2020-09-30 15:46:15 -07:00
pointer-assignment.cpp [flang] Fix false error message for "ptr => func()" array conformance 2020-12-15 16:26:18 -08:00
pointer-assignment.h [flang] DATA stmt processing (part 3/4): Remaining prep work 2020-06-19 09:09:05 -07:00
program-tree.cpp [flang] Parse global compiler directives 2020-08-25 11:41:11 -07:00
program-tree.h [flang] Parse global compiler directives 2020-08-25 11:41:11 -07:00
resolve-directives.cpp Add Semantic check for Flang OpenMP 4.5 - 2.7.1 Do Loop restrictions for Threadprivate. 2021-03-08 20:32:26 +05:30
resolve-directives.h [flang][NFC] Extract name resolution for OpenACC & OpenMP into new file 2020-07-28 16:38:36 -07:00
resolve-labels.cpp [flang] Allow labels on END statements. 2020-11-11 13:06:19 -08:00
resolve-labels.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
resolve-names-utils.cpp [flang] Fix creation of deferred shape arrays by POINTER statement 2021-01-20 13:08:11 -08:00
resolve-names-utils.h [flang] Fix creation of deferred shape arrays by POINTER statement 2021-01-20 13:08:11 -08:00
resolve-names.cpp [flang] Prohibit MODULE procedures in the global scope 2021-03-03 11:50:50 -08:00
resolve-names.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
rewrite-parse-tree.cpp [flang] Clean up TODO comments and fix one (DATA constant ambiguity) 2020-12-15 13:36:07 -08:00
rewrite-parse-tree.h [flang] Reformat with latest clang-format and .clang-format 2020-03-28 21:00:16 -07:00
runtime-type-info.cpp [flang] Improve shape & length characterization 2021-01-30 16:14:27 -08:00
scope.cpp Making FindCommonBlock a const member 2021-02-22 10:10:11 -08:00
semantics.cpp [flang] Create names to allow access to inaccessible specifics 2021-01-15 16:56:38 -08:00
symbol.cpp [flang][msvc] Reapply "Explicitly reference "this" inside closure" 2021-02-04 16:33:51 -06:00
tools.cpp [flang] Support disabled alternative PARAMETER statement 2021-01-29 15:30:06 -08:00
type.cpp [flang] Support disabled alternative PARAMETER statement 2021-01-29 15:30:06 -08:00
unparse-with-symbols.cpp [flang][openacc] Basic name resolution infrastructure for OpenACC construct 2020-07-26 20:01:35 -04:00