ocaml · Octachron · Mar 16, 2021 · Feb 9, 2021 · Feb 9, 2021 · Feb 9, 2021
diff --git a/.depend b/.depend
@@ -5876,6 +5876,7 @@ driver/main_args.cmo : \
     utils/warnings.cmi \
     utils/profile.cmi \
     utils/misc.cmi \
+    parsing/location.cmi \
     utils/config.cmi \
     driver/compenv.cmi \
     utils/clflags.cmi \
@@ -5884,6 +5885,7 @@ driver/main_args.cmx : \
     utils/warnings.cmx \
     utils/profile.cmx \
     utils/misc.cmx \
+    parsing/location.cmx \
     utils/config.cmx \
     driver/compenv.cmx \
     utils/clflags.cmx \

diff --git a/Changes b/Changes
@@ -184,6 +184,12 @@ Working version
 - #8877: Call the linker when ocamlopt is invoked with .o and .a files only.
   (Greta Yorsh, review by Leo White)
 
+- #10207: deprecate single uppercase or lowercase letter in warning
+  specifications.
+  The form `-w aBcD` was equivalent to `-w -a+b-c+d`.
+  It is now deprecated to improve the coexistence with warning mnemonics.
+  (Florian Angeletti, review by Damien Doligez and Gabriel Scherer)
+
 ### Internal/compiler-libs changes:
 
 - #9243, simplify parser rules for array indexing operations

diff --git a/Makefile b/Makefile
@@ -43,7 +43,7 @@ INCLUDES=-I utils -I parsing -I typing -I bytecomp -I file_formats \
         -I driver -I toplevel
 
 COMPFLAGS=-strict-sequence -principal -absname -w +a-4-9-40-41-42-44-45-48-66 \
-	  -warn-error A \
+	  -warn-error +a \
           -bin-annot -safe-string -strict-formats $(INCLUDES)
 LINKFLAGS=
 

diff --git a/debugger/Makefile b/debugger/Makefile
@@ -22,7 +22,7 @@ DYNLINKDIR=$(ROOTDIR)/otherlibs/dynlink
 UNIXDIR=$(ROOTDIR)/otherlibs/$(UNIXLIB)
 
 CAMLC=$(BEST_OCAMLC) -g -nostdlib -I $(ROOTDIR)/stdlib
-COMPFLAGS=$(INCLUDES) -absname -w +a-4-9-41-42-44-45-48 -warn-error A \
+COMPFLAGS=$(INCLUDES) -absname -w +a-4-9-41-42-44-45-48 -warn-error +A \
           -safe-string -strict-sequence -strict-formats
 LINKFLAGS=-linkall -I $(UNIXDIR) -I $(DYNLINKDIR)
 OCAMLLEX ?= $(BEST_OCAMLLEX)

diff --git a/driver/compenv.ml b/driver/compenv.ml
@@ -221,6 +221,9 @@ let set_compiler_pass ppf ~name v flag ~filter =
    because they are not understood by some versions of OCaml. *)
 let can_discard = ref []
 
+let parse_warnings error v =
+  Option.iter Location.(prerr_alert none) @@ Warnings.parse_options error v
+
 let read_one_param ppf position name v =
   let set name options s =  setter ppf (fun b -> b) name options s in
   let clear name options s = setter ppf (fun b -> not b) name options s in
@@ -277,11 +280,11 @@ let read_one_param ppf position name v =
   |  "dstartup" -> set "dstartup" [ Clflags.keep_startup_file ] v
 
   (* warn-errors *)
-  | "we" | "warn-error" -> Warnings.parse_options true v
+  | "we" | "warn-error" -> parse_warnings true v
   (* warnings *)
-  |  "w"  ->               Warnings.parse_options false v
+  |  "w"  ->               parse_warnings false v
   (* warn-errors *)
-  | "wwe" ->               Warnings.parse_options false v
+  | "wwe" ->               parse_warnings false v
   (* alerts *)
   | "alert" ->             Warnings.parse_alert_option v
 

diff --git a/driver/main_args.ml b/driver/main_args.ml
@@ -1700,7 +1700,8 @@ module Default = struct
     let _strict_sequence = set strict_sequence
     let _unboxed_types = set unboxed_types
     let _unsafe_string = set unsafe_string
-    let _w s = Warnings.parse_options false s
+    let _w s =
+      Warnings.parse_options false s |> Option.iter Location.(prerr_alert none)
 
     let anonymous = Compenv.anonymous
 
@@ -1724,7 +1725,8 @@ module Default = struct
     let _nopervasives = set nopervasives
     let _ppx s = Compenv.first_ppx := (s :: (!Compenv.first_ppx))
     let _unsafe = set unsafe
-    let _warn_error s = Warnings.parse_options true s
+    let _warn_error s =
+      Warnings.parse_options true s |> Option.iter Location.(prerr_alert none)
     let _warn_help = Warnings.help_warnings
   end
 

diff --git a/lex/Makefile b/lex/Makefile
@@ -24,7 +24,7 @@ OCAMLYACCFLAGS = -v
 CAMLC = $(BOOT_OCAMLC) -strict-sequence -nostdlib \
         -I $(ROOTDIR)/boot -use-prims $(ROOTDIR)/runtime/primitives
 CAMLOPT = $(CAMLRUN) $(ROOTDIR)/ocamlopt$(EXE) -nostdlib -I $(ROOTDIR)/stdlib
-COMPFLAGS = -absname -w +a-4-9-41-42-44-45-48 -warn-error A \
+COMPFLAGS = -absname -w +a-4-9-41-42-44-45-48 -warn-error +A \
             -safe-string -strict-sequence -strict-formats -bin-annot
 LINKFLAGS =
 OCAMLLEX ?= $(BOOT_OCAMLLEX)

diff --git a/ocamldoc/Makefile b/ocamldoc/Makefile
@@ -75,7 +75,7 @@ INCLUDES_NODEP=\
 DEPINCLUDES=$(INCLUDES_DEP)
 INCLUDES=$(INCLUDES_DEP) $(INCLUDES_NODEP)
 
-COMPFLAGS=$(INCLUDES) -absname -w +a-4-9-41-42-44-45-48 -warn-error A \
+COMPFLAGS=$(INCLUDES) -absname -w +a-4-9-41-42-44-45-48 -warn-error +A \
   -safe-string -strict-sequence -strict-formats -bin-annot -principal
 
 LINKFLAGS=$(INCLUDES) -nostdlib

diff --git a/ocamltest/Makefile b/ocamltest/Makefile
@@ -190,7 +190,7 @@ include_directories := $(addprefix -I , $(directories))
 
 flags := -g -nostdlib $(include_directories) \
   -strict-sequence -safe-string -strict-formats \
-  -w +a-4-9-41-42-44-45-48 -warn-error A
+  -w +a-4-9-41-42-44-45-48 -warn-error +A
 
 ocamlc = $(BEST_OCAMLC) $(flags)
 

diff --git a/otherlibs/Makefile.otherlibs.common b/otherlibs/Makefile.otherlibs.common
@@ -30,7 +30,7 @@ OC_CFLAGS += $(SHAREDLIB_CFLAGS) $(EXTRACFLAGS)
 OC_CPPFLAGS += -I$(ROOTDIR)/runtime $(EXTRACPPFLAGS)
 
 # Compilation options
-COMPFLAGS=-absname -w +a-4-9-41-42-44-45-48 -warn-error A -bin-annot -g \
+COMPFLAGS=-absname -w +a-4-9-41-42-44-45-48 -warn-error +A -bin-annot -g \
           -safe-string -strict-sequence -strict-formats $(EXTRACAMLFLAGS)
 ifeq "$(FLAMBDA)" "true"
 OPTCOMPFLAGS += -O3

diff --git a/otherlibs/dynlink/Makefile b/otherlibs/dynlink/Makefile
@@ -29,7 +29,7 @@ OCAMLOPT=$(BEST_OCAMLOPT) -g -nostdlib -I $(ROOTDIR)/stdlib
 
 # COMPFLAGS should be in sync with the toplevel Makefile's COMPFLAGS.
 COMPFLAGS=-strict-sequence -principal -absname -w +a-4-9-40-41-42-44-45-48-66 \
-	  -warn-error A \
+	  -warn-error +A \
           -bin-annot -safe-string -strict-formats
 ifeq "$(FLAMBDA)" "true"
 OPTCOMPFLAGS += -O3

diff --git a/otherlibs/systhreads/Makefile b/otherlibs/systhreads/Makefile
@@ -35,7 +35,7 @@ CAMLC=$(BEST_OCAMLC) $(LIBS)
 CAMLOPT=$(BEST_OCAMLOPT) $(LIBS)
 
 MKLIB=$(CAMLRUN) $(ROOTDIR)/tools/ocamlmklib$(EXE)
-COMPFLAGS=-w +33..39 -warn-error A -g -bin-annot -safe-string
+COMPFLAGS=-w +33..39 -warn-error +A -g -bin-annot -safe-string
 ifeq "$(FLAMBDA)" "true"
 OPTCOMPFLAGS += -O3
 endif

diff --git a/parsing/builtin_attributes.ml b/parsing/builtin_attributes.ml
@@ -179,7 +179,9 @@ let warning_attribute ?(ppwarning = true) =
   let process loc txt errflag payload =
     match string_of_payload payload with
     | Some s ->
-        begin try Warnings.parse_options errflag s
+        begin try
+          Option.iter (Location.prerr_alert loc)
+            (Warnings.parse_options errflag s)
         with Arg.Bad msg -> warn_payload loc txt msg
         end
     | None ->

diff --git a/stdlib/Compflags b/stdlib/Compflags
@@ -27,10 +27,10 @@ case $1 in
     # never instrument camlinternalOO or camlinternalLazy (PR#7725)
   stdlib__Buffer.cmx) echo ' -inline 3';;
                            # make sure add_char is inlined (PR#5872)
-  stdlib__Buffer.cm[io]) echo ' -w A';;
-  camlinternalFormat.cm[io]) echo ' -w Ae';;
+  stdlib__Buffer.cm[io]) echo ' -w +A';;
+  camlinternalFormat.cm[io]) echo ' -w +A -w -fragile-match';;
   stdlib__Printf.cm[io]|stdlib__Format.cm[io]|stdlib__Scanf.cm[io])
-      echo ' -w Ae';;
+      echo ' -w +A -w -fragile-match';;
   stdlib__Scanf.cmx) echo ' -inline 9';;
   *Labels.cmi) echo ' -pp "$AWK -f ./expand_module_aliases.awk"';;
   *Labels.cm[ox]) echo ' -nolabels -no-alias-deps';;

diff --git a/stdlib/Makefile b/stdlib/Makefile
@@ -22,7 +22,7 @@ TARGET_BINDIR ?= $(BINDIR)
 COMPILER=$(ROOTDIR)/ocamlc$(EXE)
 CAMLC=$(CAMLRUN) $(COMPILER)
 COMPFLAGS=-strict-sequence -absname -w +a-4-9-41-42-44-45-48 \
-          -g -warn-error A -bin-annot -nostdlib -principal \
+          -g -warn-error +A -bin-annot -nostdlib -principal \
           -safe-string -strict-formats
 ifeq "$(FLAMBDA)" "true"
 OPTCOMPFLAGS += -O3

diff --git a/testsuite/tests/ast-invariants/test.ml b/testsuite/tests/ast-invariants/test.ml
@@ -30,7 +30,7 @@ let invariants : type a. a kind -> a -> unit = function
   | Interf -> Ast_invariants.signature
 
 let check_file kind fn =
-  Warnings.parse_options false "-a";
+  ignore (Warnings.parse_options false "-a");
   let ic = open_in fn in
   Location.input_name := fn;
   let lexbuf = Lexing.from_channel ic in

diff --git a/testsuite/tests/gc-roots/globroots.ml b/testsuite/tests/gc-roots/globroots.ml
@@ -1,5 +1,5 @@
 (* TEST
-   flags += " -w a "
+   flags += " -w -a "
    modules = "globrootsprim.c"
 *)
 

diff --git a/testsuite/tests/lib-digest/md5.ml b/testsuite/tests/lib-digest/md5.ml
@@ -1,5 +1,5 @@
 (* TEST
-   flags += " -w a "
+   flags += " -w -a "
 *)
 
 (* Test int32 arithmetic and optimizations using the MD5 algorithm *)

diff --git a/testsuite/tests/lib-unix/win-env/test_env.ml b/testsuite/tests/lib-unix/win-env/test_env.ml
@@ -1,6 +1,6 @@
 (* TEST
 include unix
-flags += "-strict-sequence -safe-string -w A -warn-error A"
+flags += "-strict-sequence -safe-string -w +A -warn-error +A"
 modules = "stubs.c"
 * libwin32unix
 ** bytecode

diff --git a/testsuite/tests/output-complete-obj/github9344.ml b/testsuite/tests/output-complete-obj/github9344.ml
@@ -4,7 +4,7 @@ use_runtime = "false"
 
 * setup-ocamlc.byte-build-env
 ** ocamlc.byte
-flags = "-w a -output-complete-exe -ccopt -I${ocamlsrcdir}/runtime"
+flags = "-w -a -output-complete-exe -ccopt -I${ocamlsrcdir}/runtime"
 program = "github9344"
 *** run
 program = "sh ${test_source_directory}/github9344.sh"

diff --git a/testsuite/tests/output-complete-obj/test.ml b/testsuite/tests/output-complete-obj/test.ml
@@ -5,7 +5,7 @@ files = "test.ml_stub.c"
 * libunix
 ** setup-ocamlc.byte-build-env
 *** ocamlc.byte
-flags = "-w a -output-complete-obj"
+flags = "-w -a -output-complete-obj"
 program = "test.ml.bc.${objext}"
 **** script
 script = "${mkexe} -I${ocamlsrcdir}/runtime -o test.ml_bc_stub.exe \
@@ -17,7 +17,7 @@ stdout = "program-output"
 stderr = "program-output"
 ** setup-ocamlopt.byte-build-env
 *** ocamlopt.byte
-flags = "-w a -output-complete-obj"
+flags = "-w -a -output-complete-obj"
 program = "test.ml.exe.${objext}"
 **** script
 script = "${mkexe} -I${ocamlsrcdir}/runtime -o test.ml_stub.exe \

diff --git a/testsuite/tests/output-complete-obj/test2.ml b/testsuite/tests/output-complete-obj/test2.ml
@@ -7,7 +7,7 @@ use_runtime = "false"
 include unix
 ** setup-ocamlc.byte-build-env
 *** ocamlc.byte
-flags = "-w a -output-complete-exe puts.c -ccopt -I${ocamlsrcdir}/runtime"
+flags = "-w -a -output-complete-exe puts.c -ccopt -I${ocamlsrcdir}/runtime"
 program = "test2"
 **** run
 program = "./test2"

diff --git a/testsuite/tests/runtime-errors/stackoverflow.ml b/testsuite/tests/runtime-errors/stackoverflow.ml
@@ -1,6 +1,6 @@
 (* TEST
 
-flags = "-w a"
+flags = "-w -a"
 
 * setup-ocamlc.byte-build-env
 ** ocamlc.byte

diff --git a/testsuite/tests/runtime-errors/syserror.ml b/testsuite/tests/runtime-errors/syserror.ml
@@ -1,6 +1,6 @@
 (* TEST
 
-flags = "-w a"
+flags = "-w -a"
 
 * setup-ocamlc.byte-build-env
 ** ocamlc.byte

diff --git a/testsuite/tests/tool-ocaml/t000.ml b/testsuite/tests/tool-ocaml/t000.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t010-const0.ml b/testsuite/tests/tool-ocaml/t010-const0.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t010-const1.ml b/testsuite/tests/tool-ocaml/t010-const1.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t010-const2.ml b/testsuite/tests/tool-ocaml/t010-const2.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t010-const3.ml b/testsuite/tests/tool-ocaml/t010-const3.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t011-constint.ml b/testsuite/tests/tool-ocaml/t011-constint.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t020.ml b/testsuite/tests/tool-ocaml/t020.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t021-pushconst1.ml b/testsuite/tests/tool-ocaml/t021-pushconst1.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t021-pushconst2.ml b/testsuite/tests/tool-ocaml/t021-pushconst2.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t021-pushconst3.ml b/testsuite/tests/tool-ocaml/t021-pushconst3.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t022-pushconstint.ml b/testsuite/tests/tool-ocaml/t022-pushconstint.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t040-makeblock1.ml b/testsuite/tests/tool-ocaml/t040-makeblock1.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t040-makeblock2.ml b/testsuite/tests/tool-ocaml/t040-makeblock2.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t040-makeblock3.ml b/testsuite/tests/tool-ocaml/t040-makeblock3.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t041-makeblock.ml b/testsuite/tests/tool-ocaml/t041-makeblock.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t050-getglobal.ml b/testsuite/tests/tool-ocaml/t050-getglobal.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml

diff --git a/testsuite/tests/tool-ocaml/t050-pushgetglobal.ml b/testsuite/tests/tool-ocaml/t050-pushgetglobal.ml
@@ -1,6 +1,6 @@
 (* TEST
 include tool-ocaml-lib
-flags = "-w a"
+flags = "-w -a"
 ocaml_script_as_argument = "true"
 * setup-ocaml-build-env
 ** ocaml