Your message dated Mon, 21 Aug 2017 16:34:44 +0200
with message-id <[email protected]>
and subject line Re: Bug#646783: fftw3: configure --enable-debug-malloc doesn't
enable debug_malloc
has caused the Debian Bug report #646783,
regarding fftw3: configure --enable-debug-malloc doesn't enable debug_malloc
to be marked as done.
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646783: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=646783
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--- Begin Message ---
Package: fftw3
Severity: normal
While trying to track down a memory allocation problem with fftw3, I read the
documentation and
discovered the --enable-debug-malloc option.
So I did an
$ apt-get source fftw3
$ cd fftw3-3.2.2
$ ./configure CFLAGS=-g --prefix=$(readlink -f ..) --enable-debug-malloc
--enable-debug
$ make install
I even compiled the test program with -DFFTW_DEBUG -DFFTW_DEBUG_MALLOC
but no malloc debugging takes place.
I ended up linking with -lmcheck and sprinkling mcheck(0) to find the problem.
I realize this is probably an upstream bug but I'm reporting this to Debian as
I understand it's a
Debian preference.
-- System Information:
Debian Release: wheezy/sid
APT prefers proposed-updates
APT policy: (500, 'proposed-updates'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.0.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
--- End Message ---
--- Begin Message ---
Hi,
--enable-debug-alloc works for me.
steps to reproduce:
1. add the following flags to debian/rules before recompiling the package
archconfflags := $(archconfflags) --enable-debug --enable-debug-malloc
2. compile the attached test program, adjusting winsize to be large
enough to get malloc to fail.
$ gcc test.c -o a.out `pkg-config --libs --cflags fftw3f` && ./a.out
fftw: alloc.c:104: assertion failed: p
Aborted
$ gcc test.c -o a.out `pkg-config --libs --cflags fftw3f` && ./a.out
fftw: alloc.c:170: assertion failed: estat->siz >= 0
Aborted
These warnings are coming from './kernel/alloc.c', which is only
compiled in when --enable-debug-malloc is passed.
I'm not sure what else was expected ("no malloc debugging takes place"
is vague). Also, this option was since removed from the manual.
Please re-open as required, providing additional information.
cheers, piem
#define FFTW_DEBUG 1
#define FFTW_DEBUG_MALLOC 1
#include <stdlib.h>
#include <fftw3.h>
int main() {
fftwf_plan pfw, pbw;
int winsize = 1024 * 1024 * 513;
int fft_size = winsize / 2 + 1;
float *in = (float*)malloc(sizeof(float)*winsize);
float *out = (float*)malloc(sizeof(float)*winsize);
float *specdata = (float*)fftwf_malloc(sizeof(float)*fft_size);
pfw = fftwf_plan_r2r_1d(winsize, in, specdata, FFTW_R2HC, FFTW_ESTIMATE);
pbw = fftwf_plan_r2r_1d(winsize, specdata, out, FFTW_HC2R, FFTW_ESTIMATE);
fftwf_destroy_plan(pfw);
fftwf_destroy_plan(pbw);
fftwf_free(specdata);
free(in);
free(out);
return 0;
}
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