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(AC_HEADER_STDBOOL): Fix overly-picky

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test for C99 conformance; (bool) 0.5 is an integer constant
expression, but (bool) -0.5 is not.  Problem reported by Fedor
Sergeev in <http://forum.sun.com/jive/thread.jspa?threadID=96202>.
This commit is contained in:
Paul Eggert
2006-05-15 03:17:08 +00:00
parent 3c51d8f36f
commit 48138763f0
2 changed files with 9 additions and 2 deletions
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m4/ChangeLog
+7
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@@ -1,3 +1,10 @@
2006-05-14 Paul Eggert <eggert@cs.ucla.edu>
* stdbool.m4 (AC_HEADER_STDBOOL): Fix overly-picky
test for C99 conformance; (bool) 0.5 is an integer constant
expression, but (bool) -0.5 is not. Problem reported by Fedor
Sergeev in <http://forum.sun.com/jive/thread.jspa?threadID=96202>.
2006-02-17 Eric Blake <ebb9@byu.net>
Sync from gnulib.
m4/stdbool.m4
+2 -2
View File
@@ -64,9 +64,9 @@ AC_DEFUN([AC_HEADER_STDBOOL],
char a[true == 1 ? 1 : -1];
char b[false == 0 ? 1 : -1];
char c[__bool_true_false_are_defined == 1 ? 1 : -1];
char d[(bool) -0.5 == true ? 1 : -1];
char d[(bool) 0.5 == true ? 1 : -1];
bool e = &s;
char f[(_Bool) -0.0 == false ? 1 : -1];
char f[(_Bool) 0.0 == false ? 1 : -1];
char g[true];
char h[sizeof (_Bool)];
char i[sizeof s.t];