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Update release notes.

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Stephen Heumann 2017-11-12 21:43:39 -06:00
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@ -1,15 +1,15 @@
ORCA/C 2.2.0 B1
ORCA/C 2.2.0 B2
Copyright 1997, Byte Works Inc.
-- Change List --------------------------------------------------------------
2.2.0 B1 1. Bugs squashed. See bug notes, below.
2.2.0 B2 1. Bugs squashed. See bug notes, below.
2. New language features added (mainly features from C99).
See "Compiler changes introduced in C 2.2.0."
3. Some optimization passes have small improvements.
4. Some internal size limits were raised, allowing compilation of
larger functions.
@ -21,6 +21,9 @@ Copyright 1997, Byte Works Inc.
7. Some new headers specified by recent C standards are added.
See "New Headers."
7. Two new #pragma ignore bits are defined. See "Compiler changes
introduced in C 2.2.0".
2.1.1 B3 1. Bugs squashed. See bug notes, below.
2.1.0 1. Bugs squashed. See bug notes, below.
@ -47,7 +50,7 @@ Copyright 1997, Byte Works Inc.
-- Known Issues -------------------------------------------------------------
1. The loop invariant removal optimization pass can create infinite loops or otherwise generate bad code in some cases.
1. The loop invariant removal optimization pass can generate bad code (e.g. creating infinite loops) in some cases.
2. The % operator will generally not work correctly when either operand is negative. It may produce an incorrect result, or in certain scenarios it may give a compile-time or run-time error.
@ -256,6 +259,10 @@ The flexible array member does not contribute to the size of the struct as repor
6. The "#warning" preprocessor directive is now supported. This behaves similarly to #error in that it causes any following tokens to be printed as a diagnostic message, but (unlike #error) it does not abort compilation. (This is a non-standard feature, but compatible with other common compilers such as GCC and Clang.)
7. A new bit (bit 2, a value of 4) is introduced in #pragma ignore that permits spurious tokens to appear after the #endif directive. If this bit is set, the tokens are treated as a comment, and have no effect on the program. If this bit is clear, tokens after #endif are treated as an error. (This feature was introduced in MPW IIgs ORCA/C and is compatible with it, but in this version the bit is unset by default, providing standard-compliant semantics.)
(Kelvin Sherlock, Mike Westerfield)
Multi-Character Character Constants
-----------------------------------
@ -535,6 +542,18 @@ int foo(int[42]);
51. An unlimited number of octal digits could be processed as part of an octal escape sequence in a character constant or string. Octal escape sequences are now limited to a maximum of three octal digits, as required by the C standards. (This partially reverts a change in ORCA/C 2.1.0, which should only have applied to hexadecimal escape sequences.)
52. Fixed several bugs that could cause the loop invariant removal and common subexpression elimination optimizations to move code when it was invalid to do so.
(Soenke Behrens, Michael Guitton)
53. Added prototypes for internal functions called by macros in <stdio.h>, so they will not produce errors when certain #pragma lint options are used.
(Robert Eckweiler)
54. Fixed several bugs that could cause invalid code to be generated for array indexing or pointer arithmetic in certain cases.
(Kelvin Sherlock, Stephen Heumann)
-- Bugs from C 2.1.0 that have been fixed -----------------------------------
1. In some situations, fread() reread the first 1K or so of the file.