- Change distinct -> typedef.

- Order of attribute declaration is changed for `alias`.
- Added `LANGUAGE_DEV_VERSION` env constant.
- Rename `anyfault` -> `fault`.
- Changed `fault` -> `faultdef`.
- Added `attrdef` instead of `alias` for attribute aliases.

test/test_suite/errors/anyfault_void.c3t

@@ -1,4 +1,4 @@
-fault FOO, BAR;
+faultdef FOO, BAR;
 
 fn void? errorThing()
 {
@@ -13,7 +13,7 @@ fn void? errorThing2()
 extern fn void printf(char*, ...);
 fn void main()
 {
-    anyfault z = @catch(errorThing());
+    fault z = @catch(errorThing());
     printf("Z;   %llx\n", (iptr)(z));
     printf("BAR: %llx\n", (iptr)(BAR));
     printf("FOO: %llx\n", (iptr)(FOO));

test/test_suite/errors/empty_fault.c3

@@ -1,2 +1,2 @@
 module test;
-fault; // #error: Expected
+faultdef; // #error: Expected

test/test_suite/errors/error_decl_ok.c3

@@ -1,9 +1,9 @@
 module errors;
 
-fault A;
+faultdef A;
 
-fault A2, B2;
+faultdef A2, B2;
 
-fault C, D;
+faultdef C, D;
 
 

test/test_suite/errors/error_else.c3t

@@ -1,6 +1,6 @@
 module foo;
 
-fault TEST;
+faultdef TEST;
 
 module bar;
 import foo;

test/test_suite/errors/error_regression_2.c3t

@@ -45,7 +45,7 @@ macro dupe(value)
 	return temp;
 }
 
-fault BAD_READ, OUT_OF_MEMORY;
+faultdef BAD_READ, OUT_OF_MEMORY;
 
 fn Doc? readDoc(char[] url)
 {
@@ -85,7 +85,7 @@ fn Summary readAndBuildSummary(char[] url)
 }
 
 
-fault  TITLE_MISSING;
+faultdef  TITLE_MISSING;
 
 fn bool? isTitleNonEmpty(Doc doc)
 {
@@ -105,7 +105,7 @@ fn char* bool_to_string(bool b)
 {
 	return b ? "true" : "false";
 }
-fn char* nameFromError(anyfault e)
+fn char* nameFromError(fault e)
 {
 	switch (e)
 	{

test/test_suite/errors/error_semantic_fails.c3

@@ -1,4 +1,4 @@
-fault
+faultdef
 
     A,
     A // #error: would shadow a previous declaration

test/test_suite/errors/error_throw.c3

@@ -1,6 +1,6 @@
 module foo;
 
-fault Z;
+faultdef Z;
 
 fn void main()
 {

test/test_suite/errors/error_union.c3

@@ -1,8 +1,8 @@
 module foo;
 
-fault X, Y, Z;
+faultdef X, Y, Z;
 
 fn void main()
 {
-    anyfault foo;
+    fault foo;
 }

test/test_suite/errors/failable_catch.c3t

@@ -1,6 +1,6 @@
 // #target: macos-x64
 
-fault TEST;
+faultdef TEST;
 
 macro foo(int x)
 {

test/test_suite/errors/fault_conv.c3t

@@ -2,9 +2,9 @@
 module test;
 import std::io;
 
-fault BAD_STUFF, WORSE_STUFF, THE_WORST_STUFF;
+faultdef BAD_STUFF, WORSE_STUFF, THE_WORST_STUFF;
 
-fn int exitcode(anyfault error)
+fn int exitcode(fault error)
 {
     switch (error)
     {

test/test_suite/errors/general_error_regression.c3t

@@ -2,16 +2,16 @@
 module foo;
 import std::io;
 import libc;
-fault
+faultdef
     X,
     Y,
     Z,
     W,
     W1;
 
-fault X1, Y2;
+faultdef X1, Y2;
 
-distinct Bar = int;
+typedef Bar = int;
 
 enum MyEnum
 {
@@ -30,9 +30,9 @@ fn void MyEnum.hello(MyEnum *myenum)
 }
 fn void main()
 {
-    anyfault f = X;
-    anyfault ef = Y;
-    anyfault x = f;
+    fault f = X;
+    fault ef = Y;
+    fault x = f;
     ulong z = (ulong)(x);
     libc::printf("1: %p\n", z);
     x = ef;

test/test_suite/errors/macro_err2.c3t

@@ -1,7 +1,7 @@
 // #target: macos-x64
 module test;
 import libc;
-fault FOO;
+faultdef FOO;
 
 fn int? abc()
 {

test/test_suite/errors/macro_err3.c3t

@@ -1,7 +1,7 @@
 // #target: macos-x64
 module test;
 import libc;
-fault FOO;
+faultdef FOO;
 
 
 macro test()

test/test_suite/errors/missing_bang.c3

@@ -1,5 +1,5 @@
 
-fault FOO;
+faultdef FOO;
 
 fn int? test()
 {

test/test_suite/errors/more_optional_tests.c3

@@ -1,6 +1,6 @@
 module foo;
 
-fault ABC;
+faultdef ABC;
 
 fn void test()
 {

test/test_suite/errors/multiple_catch.c3t

@@ -3,7 +3,7 @@
 module demo1;
 import std::io;
 
-fault ABC, DEF;
+faultdef ABC, DEF;
 
 fn int? hello(int a)
 {
@@ -30,7 +30,7 @@ fn void main()
     {
     	io::printn("3 Ok");
     }
-	if (catch anyfault err = hello(0), bye())
+	if (catch fault err = hello(0), bye())
     {
 		io::printfn("4 Got %s", err);
     }
@@ -95,7 +95,7 @@ end_block:                                        ; preds = %after_check4, %assi
 
 if.then:                                          ; preds = %end_block
   %5 = insertvalue %any undef, ptr %err, 0
-  %6 = insertvalue %any %5, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %6 = insertvalue %any %5, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %6, ptr %varargslots, align 16
   %7 = call i64 @std.io.printfn(ptr %retparam5, ptr @.str.2, i64 8, ptr %varargslots, i64 1)
   br label %if.exit
@@ -137,7 +137,7 @@ end_block18:                                      ; preds = %after_check17, %ass
 
 if.then20:                                        ; preds = %end_block18
   %13 = insertvalue %any undef, ptr %err8, 0
-  %14 = insertvalue %any %13, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %14 = insertvalue %any %13, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %14, ptr %varargslots21, align 16
   %15 = call i64 @std.io.printfn(ptr %retparam22, ptr @.str.3, i64 8, ptr %varargslots21, i64 1)
   br label %if.exit25
@@ -273,7 +273,7 @@ end_block66:                                      ; preds = %after_check65, %ass
 
 if.then68:                                        ; preds = %end_block66
   %35 = insertvalue %any undef, ptr %err56, 0
-  %36 = insertvalue %any %35, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %36 = insertvalue %any %35, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %36, ptr %varargslots69, align 16
   %37 = call i64 @std.io.printfn(ptr %retparam70, ptr @.str.5, i64 8, ptr %varargslots69, i64 1)
   br label %if.exit73

test/test_suite/errors/optional_chained_init.c3t

@@ -2,7 +2,7 @@
 module test;
 import std::io;
 
-fault FOO;
+faultdef FOO;
 
 fn void test1()
 {
@@ -92,7 +92,7 @@ end_block:                                        ; preds = %after_check, %assig
 
 if.then:                                          ; preds = %end_block
   %2 = insertvalue %any undef, ptr %err, 0
-  %3 = insertvalue %any %2, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %3 = insertvalue %any %2, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %3, ptr %varargslots, align 16
   %4 = call i64 @std.io.printfn(ptr %retparam, ptr @.str, i64 13, ptr %varargslots, i64 1)
   br label %if.exit
@@ -121,7 +121,7 @@ end_block9:                                       ; preds = %after_check8, %assi
 
 if.then11:                                        ; preds = %end_block9
   %7 = insertvalue %any undef, ptr %err3, 0
-  %8 = insertvalue %any %7, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %8 = insertvalue %any %7, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %8, ptr %varargslots12, align 16
   %9 = call i64 @std.io.printfn(ptr %retparam13, ptr @.str.1, i64 13, ptr %varargslots12, i64 1)
   br label %if.exit16
@@ -231,7 +231,7 @@ end_block:                                        ; preds = %after_check5, %assi
 
 if.then:                                          ; preds = %end_block
   %4 = insertvalue %any undef, ptr %err, 0
-  %5 = insertvalue %any %4, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %5 = insertvalue %any %4, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %5, ptr %varargslots, align 16
   %6 = call i64 @std.io.printfn(ptr %retparam, ptr @.str.4, i64 13, ptr %varargslots, i64 1)
   br label %if.exit
@@ -260,7 +260,7 @@ end_block14:                                      ; preds = %after_check13, %ass
 
 if.then16:                                        ; preds = %end_block14
   %9 = insertvalue %any undef, ptr %err8, 0
-  %10 = insertvalue %any %9, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %10 = insertvalue %any %9, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %10, ptr %varargslots17, align 16
   %11 = call i64 @std.io.printfn(ptr %retparam18, ptr @.str.5, i64 13, ptr %varargslots17, i64 1)
   br label %if.exit21
@@ -371,7 +371,7 @@ end_block:                                        ; preds = %after_check5, %assi
 
 if.then:                                          ; preds = %end_block
   %4 = insertvalue %any undef, ptr %err, 0
-  %5 = insertvalue %any %4, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %5 = insertvalue %any %4, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %5, ptr %varargslots, align 16
   %6 = call i64 @std.io.printfn(ptr %retparam, ptr @.str.8, i64 13, ptr %varargslots, i64 1)
   br label %if.exit
@@ -400,7 +400,7 @@ end_block14:                                      ; preds = %after_check13, %ass
 
 if.then16:                                        ; preds = %end_block14
   %9 = insertvalue %any undef, ptr %err8, 0
-  %10 = insertvalue %any %9, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %10 = insertvalue %any %9, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %10, ptr %varargslots17, align 16
   %11 = call i64 @std.io.printfn(ptr %retparam18, ptr @.str.9, i64 13, ptr %varargslots17, i64 1)
   br label %if.exit21

test/test_suite/errors/optional_contracts.c3

@@ -1,10 +1,10 @@
-fault
+faultdef
 	ABC,
 	DEF,
 	ZED;
 
 
-fault XYZ;
+faultdef XYZ;
 <*
 
  hello world

test/test_suite/errors/optional_inits.c3t

@@ -2,7 +2,7 @@
 
 module test;
 import std::io;
-fault MY_VAL1, MY_VAL2;
+faultdef MY_VAL1, MY_VAL2;
 
 struct Bar
 {

test/test_suite/errors/optional_taddr_and_access.c3t

@@ -6,7 +6,7 @@ struct Foo
     int x, y;
 }
 
-fault FOO;
+faultdef FOO;
 
 extern fn int printf(char *c, ...);
 

test/test_suite/errors/optional_untyped_list.c3

@@ -4,7 +4,7 @@ struct Foo
     int x, y;
 }
 
-fault FOO;
+faultdef FOO;
 
 extern fn int printf(char *c, ...);
 

test/test_suite/errors/optional_with_optional.c3t

@@ -2,7 +2,7 @@
 module test;
 import std::io;
 
-fault ABC, DEF;
+faultdef ABC, DEF;
 
 fn void main()
 {
@@ -190,7 +190,7 @@ if.exit:                                          ; preds = %end_block
 
 expr_block.exit:                                  ; preds = %if.exit, %if.then
   %29 = insertvalue %any undef, ptr %blockret, 0
-  %30 = insertvalue %any %29, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %30 = insertvalue %any %29, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %30, ptr %varargslots44, align 16
   %31 = call i64 @std.io.printfn(ptr %retparam45, ptr @.str.3, i64 4, ptr %varargslots44, i64 1)
   store i32 3, ptr %taddr49, align 4
@@ -220,7 +220,7 @@ if.exit60:                                        ; preds = %end_block57
 
 expr_block.exit61:                                ; preds = %if.exit60, %if.then59
   %37 = insertvalue %any undef, ptr %blockret54, 0
-  %38 = insertvalue %any %37, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %38 = insertvalue %any %37, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %38, ptr %varargslots53, align 16
   %39 = call i64 @std.io.printfn(ptr %retparam62, ptr @.str.5, i64 4, ptr %varargslots53, i64 1)
   br label %testblock68
@@ -248,7 +248,7 @@ if.exit74:                                        ; preds = %end_block71
 
 expr_block.exit75:                                ; preds = %if.exit74, %if.then73
   %42 = insertvalue %any undef, ptr %blockret66, 0
-  %43 = insertvalue %any %42, i64 ptrtoint (ptr @"$ct.anyfault" to i64), 1
+  %43 = insertvalue %any %42, i64 ptrtoint (ptr @"$ct.fault" to i64), 1
   store %any %43, ptr %varargslots65, align 16
   %44 = call i64 @std.io.printfn(ptr %retparam76, ptr @.str.6, i64 4, ptr %varargslots65, i64 1)
   store i64 3, ptr %x, align 8

test/test_suite/errors/or_and_rethrow.c3t

@@ -2,7 +2,7 @@
 module foo;
 import std::io;
 
-fault ABC;
+faultdef ABC;
 
 fn void blurb() { io::printn("Blurb");}
 
@@ -31,10 +31,10 @@ fn void? test2(int x)
 
 fn void main()
 {
-	anyfault a = @catch(test(0));
-	anyfault b = @catch(test(1));
-	anyfault c = @catch(test2(0));
-	anyfault d = @catch(test2(1));
+	fault a = @catch(test(0));
+	fault b = @catch(test(1));
+	fault c = @catch(test2(0));
+	fault d = @catch(test2(1));
 }
 
 /* #expect: foo.ll

test/test_suite/errors/or_and_rethrow_missing_question.c3

@@ -1,5 +1,5 @@
 module faults;
-fault
+faultdef
     EXAMPLE,
     DOG_ATE_MY_HOMEWORK,
     MY_TEXTBOOK_CAUGHT_FIRE,

test/test_suite/errors/printing_errors.c3t

@@ -2,10 +2,10 @@
 module test;
 import std::io;
 
-fault HELLO, WORLD;
+faultdef HELLO, WORLD;
 fn void main()
 {
-	anyfault x = WORLD;
+	fault x = WORLD;
 	io::printf("%s %s\n", HELLO.nameof, x.nameof);
 }
 

test/test_suite/errors/simple_static_failable.c3t

@@ -2,7 +2,7 @@
 
 module foo;
 
-fault Y;
+faultdef Y;
 
 fn void main()
 {

test/test_suite/errors/try_assign.c3t

@@ -1,7 +1,7 @@
 // #target: macos-x64
 
 extern fn int? err();
-fault QBERT;
+faultdef QBERT;
 extern fn int printf(char* fmt, ...);
 
 fn void main()

test/test_suite/errors/try_catch_if.c3t

@@ -13,7 +13,7 @@ fn int? tester()
     return 222;
 }
 
-fault A;
+faultdef A;
 
 fn void test1()
 {

test/test_suite/errors/try_catch_unwrapping_while_if.c3

@@ -1,7 +1,7 @@
 extern fn int printf(char* fmt, ...);
 
 extern fn int? err();
-fault X;
+faultdef X;
 
 fn void test1()
 {

test/test_suite/errors/try_with_unwrapper.c3t

@@ -13,7 +13,7 @@ fn int? tester()
     return 222;
 }
 
-fault A;
+faultdef A;
 
 fn void test1()
 {