Fix nasty bug in tty interrupt code. The symptom of the bug was:

typing ^G while the microcode was in `TYI_Immediate' caused the next
read from the tty to get EOF; subsequently Scheme signalled TERM_EOF.
The problem was that there was local storage in `TYI_Immediate', which
contained trash after the interrupt performed a `longjmp' back into
the procedure.  According to the definition of `setjmp', it is illegal
to depend on such local storage.  We are unlucky in that only a little
bit of the local storage was affected so it took a long time to notice
this problem.

This was fixed by introducing a fluid-binding mechanism to allocate
and deallocate local state.  There may be a problem with the
interaction between `longjmp' and this mechanism.  If we `longjmp'
past the deallocation routine the world will be messed up.

diff --git a/v7/src/microcode/version.h b/v7/src/microcode/version.h
index b39c700a3e995e1848b2b5b38134fdf4def9c685..669729a718ba32cebb437ea7cb003e199a01a453 100644 (file)
--- a/v7/src/microcode/version.h
+++ b/v7/src/microcode/version.h
@@ -1,6 +1,6 @@
 /* -*-C-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/microcode/Attic/version.h,v 10.41 1988/06/08 16:10:06 jrm Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/microcode/Attic/version.h,v 10.42 1988/06/10 07:58:04 cph Exp $
 
 Copyright (c) 1988 Massachusetts Institute of Technology
 
@@ -46,7 +46,7 @@ MIT in each case. */
 #define VERSION                10
 #endif
 #ifndef SUBVERSION
-#define SUBVERSION     41
+#define SUBVERSION     42
 #endif
 
 #ifndef UCODE_TABLES_FILENAME

diff --git a/v8/src/microcode/version.h b/v8/src/microcode/version.h
index 9fc9d5944397f12d3ba9f34bfffabf19b13c33c4..138eedb65861058732af844059629c3d464cb74b 100644 (file)
--- a/v8/src/microcode/version.h
+++ b/v8/src/microcode/version.h
@@ -1,6 +1,6 @@
 /* -*-C-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v8/src/microcode/version.h,v 10.41 1988/06/08 16:10:06 jrm Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v8/src/microcode/version.h,v 10.42 1988/06/10 07:58:04 cph Exp $
 
 Copyright (c) 1988 Massachusetts Institute of Technology
 
@@ -46,7 +46,7 @@ MIT in each case. */
 #define VERSION                10
 #endif
 #ifndef SUBVERSION
-#define SUBVERSION     41
+#define SUBVERSION     42
 #endif
 
 #ifndef UCODE_TABLES_FILENAME