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authorBart Schaefer <barts@users.sourceforge.net>2001-04-30 17:24:00 +0000
committerBart Schaefer <barts@users.sourceforge.net>2001-04-30 17:24:00 +0000
commit2e935f0186169655f422c103d677ad3d878b9eab (patch)
treef7d6ca6ea07bbb329e168e0621c2af805b96a237
parent6757c3c734759b8b51fa99b6b60bcd2dbdc9522d (diff)
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Defeat GCC over-optimization in AC_TRY_LINK tests.
-rw-r--r--ChangeLog15
-rw-r--r--configure.in12
2 files changed, 16 insertions, 11 deletions
diff --git a/ChangeLog b/ChangeLog
index fc92100e7..e866eee98 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,15 +1,20 @@
+2001-04-30  Bart Schaefer  <schaefer@zsh.org>
+
+	* 14169: configure.in: Improve some AC_TRY_LINK tests so that they
+	can't accidentally succeed because of a compiler that optimizes
+	away unreferenced variables.
+
 2001-04-30  Sven Wischnowsky  <wischnow@zsh.org>
 
-	* 14160: Completion/Base/Completer/_expand: fixelt for the test
+	* 14160: Completion/Base/Completer/_expand: fixlet for the test
 	for the suffix style; if word contains only a tilde, don't try
 	to expand it
 
 2001-04-30  Andrej Borsenkow <bor@zsh.org>
 
-	* Bart: 14144 (modified):  Src/Modules/stat.c
-	The S_IXUSR, S_IXGRP, S_IXOTH are made external variables in
-	Cygwin 1.3.1 and cannot be used as static array initializer
-	anymore.
+	* Bart: 14144 (modified): Src/Modules/stat.c: The S_IXUSR,
+	S_IXGRP, S_IXOTH are made external variables in Cygwin 1.3.1 and
+	cannot be used as static array initializer anymore.
 
 2001-04-29  Bart Schaefer  <schaefer@zsh.org>
 
diff --git a/configure.in b/configure.in
index 87d787320..4e118de5e 100644
--- a/configure.in
+++ b/configure.in
@@ -533,36 +533,36 @@ AC_MSG_CHECKING(if boolcodes is available)
 AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
 #include <curses.h>
 #endif
-#include <term.h>], [char **test = boolcodes;],
+#include <term.h>], [char **test = boolcodes; printf(*test);],
 AC_DEFINE(HAVE_BOOLCODES) boolcodes=yes, boolcodes=no)
 AC_MSG_RESULT($boolcodes)
 AC_MSG_CHECKING(if numcodes is available)
 AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
 #include <curses.h>
 #endif
-#include <term.h>], [char **test = numcodes;],
+#include <term.h>], [char **test = numcodes; printf(*test);],
 AC_DEFINE(HAVE_NUMCODES) numcodes=yes, numcodes=no)
 AC_MSG_RESULT($numcodes)
 AC_MSG_CHECKING(if strcodes is available)
 AC_TRY_LINK([#ifdef TERM_H_NEEDS_CURSES_H
 #include <curses.h>
 #endif
-#include <term.h>], [char **test = strcodes;],
+#include <term.h>], [char **test = strcodes; printf(*test);],
 AC_DEFINE(HAVE_STRCODES) strcodes=yes, strcodes=no)
 AC_MSG_RESULT($strcodes)
 AC_MSG_CHECKING(if boolnames is available)
 AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = boolnames;],
+#include <term.h>], [char **test = boolnames; printf(*test);],
 AC_DEFINE(HAVE_BOOLNAMES) boolnames=yes, boolnames=no)
 AC_MSG_RESULT($boolnames)
 AC_MSG_CHECKING(if numnames is available)
 AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = numnames;],
+#include <term.h>], [char **test = numnames; printf(*test);],
 AC_DEFINE(HAVE_NUMNAMES) numnames=yes, numnames=no)
 AC_MSG_RESULT($numnames)
 AC_MSG_CHECKING(if strnames is available)
 AC_TRY_LINK([#include <curses.h>
-#include <term.h>], [char **test = strnames;],
+#include <term.h>], [char **test = strnames; printf(*test);],
 AC_DEFINE(HAVE_STRNAMES) strnames=yes, strnames=no)
 AC_MSG_RESULT($strnames)