- use ${TEMDIR:-/tmp} instead /tmp in base directory name for temporary files.

[packages/gawk.git] / gawk-unaligned.patch

From davidm@AZStarNet.com Mon Sep  2 10:39:42 1996
Date: Sun, 1 Sep 1996 21:06:10 -0700
From: David Mosberger-Tang <davidm@AZStarNet.com>
To: ewt@redhat.com
Cc: richard@atheist.tamu.edu
Subject: awk fix

The patch below fixes the unaligned accesses.  This is a genuine bug,
so it's better to fix it asap (not that unaligned accesses are not
worth fixing...).

The problem is as follows: re_syntax_options is a bss symbol in libc
that is 4 bytes long.  GNU awk comes with its own regex.{h,c} files
and there, that variable is declared as an `unsigned long' common
symbol.  The runtimes linker then resolves that symbol to the instance
in the shared library.  So gawk accesses that variable as a "long"
while in reality it's just 4 bytes long.

Actually, the linker warns about this.  Probably good to keep an eye
open for these:

ld: Warning: size of symbol `re_syntax_options' changed from 8 to 4 in /lib/libc.so.6

	--david

--- gawk-3.0.0/regex.c.~1~	Fri Dec 15 04:53:05 1995
+++ gawk-3.0.0/regex.c	Sun Sep  1 19:10:54 1996
@@ -920,7 +920,7 @@
    syntax, so it can be changed between regex compilations.  */
 /* This has no initializer because initialized variables in Emacs
    become read-only after dumping.  */
-reg_syntax_t re_syntax_options;
+reg_syntax_t re_syntax_options = 0;
 
 
 /* Specify the precise syntax of regexps for compilation.  This provides