Package: fftw
Followup-For: Bug #373647
Hello !
I found the problem that causes the FTBS: a buggy code generation in gcc
causes a loop to make
18446744071562067968 iterations instead of 2147483648. A workaround is provided
as a patch. A bug
report has been submitted to gcc (#376213).
Regards,
Vincent Fourmond
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16
Locale: LANG=fr_FR, LC_CTYPE=fr_FR (charmap=ISO-8859-1) (ignored: LC_ALL set to
en_GB)
--- fftw-2.1.3/tests/test_main.c 1999-10-26 23:45:06.000000000 +0200
+++ fftw-2.1.3.new/tests/test_main.c 2006-07-01 00:53:31.000000000 +0200
@@ -559,7 +559,8 @@
start = fftw_get_time();
for (i = 0; i < 32; i++) {
- iters = 1 << i;
+ if(i) iters <<= 1;
+ else iters = 1; /* work around buggy gcc-4.1 amd64 code generation */
tmin = 1.0E10;
tmax = -1.0E10;
