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Re: [GNU Autoconf 2.60b] testsuite: 77 failed
From: |
Paul Eggert |
Subject: |
Re: [GNU Autoconf 2.60b] testsuite: 77 failed |
Date: |
Thu, 26 Oct 2006 12:34:39 -0700 |
User-agent: |
Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux) |
Thanks for reporting that. Can you please verify that the following C
program does not compile, on your platform?
static long int longval () { return **0**; }
static unsigned long int ulongval () { return **0**; }
#include <stdio.h>
#include <stdlib.h>
int
main ()
{
FILE *f = fopen ("conftest.val", "w");
if (! f)
return 1;
if ((**0**) < 0)
{
long int i = longval ();
if (i != (**0**))
return 1;
fprintf (f, "%ld\n", i);
}
else
{
unsigned long int i = ulongval ();
if (i != (**0**))
return 1;
fprintf (f, "%lu\n", i);
}
return ferror (f) || fclose (f) != 0;
;
return 0;
}
I.e., can you verify that the command "gcc -g -O2 foo.c; echo $?"
echos a nonzero value at the end? Here's what happens on my platform:
$ gcc -g -O2 foo.c; echo $?
foo.c: In function 'longval':
foo.c:1: error: invalid type argument of 'unary *'
foo.c:1: error: expected expression before ';' token
foo.c: In function 'main':
foo.c:12: error: invalid type argument of 'unary *'
foo.c:12: error: expected expression before ')' token
foo.c:15: error: invalid type argument of 'unary *'
foo.c:15: error: expected expression before ')' token
foo.c:22: error: 'i' undeclared (first use in this function)
foo.c:22: error: (Each undeclared identifier is reported only once
foo.c:22: error: for each function it appears in.)
foo.c:22: error: invalid type argument of 'unary *'
foo.c:22: error: expected expression before ')' token
1
For now, I'll assume that it does not compile, and so I installed the
following patch, but I'd like you to verify my assumption. Thanks.
2006-10-26 Paul Eggert <address@hidden>
* tests/base.at (AC_COMPUTE_INT): Test **0** rather than 1 / 0,
since powerpc-apple-darwin8-gcc-4.0.1 (Apple Computer, Inc. build
5363) simply issues a warning when dividing by zero at compile
time. Problem reported by Elias Pipping.
--- tests/base.at 23 Oct 2006 06:12:40 -0000 1.40
+++ tests/base.at 26 Oct 2006 19:28:13 -0000
@@ -230,12 +230,12 @@
AT_DATA([configure.ac],
[[AC_INIT
-AC_COMPUTE_INT([divide_by_zero],
- [1 / 0],
+AC_COMPUTE_INT([invalid_expression],
+ [**0**],
[],
- [divide_by_zero=failed])
-test "$divide_by_zero" = failed ||
- AC_MSG_ERROR([1 / 0 did not fail])
+ [invalid_expression=failed])
+test "$invalid_expression" = failed ||
+ AC_MSG_ERROR([**0** evaluated to $invalid_expression instead of failing])
]])
AT_CHECK_AUTOCONF