Valgrind 3.6.0 crashes on snow leopard

[VictorEijkhout (Victor Eijkhout)]

%% cc -g read.c              
%% valgrind a.out
valgrind: mmap(0x100000000, 4096) failed in UME (load_segment1).
%% cat read.c 
#include <stdlib.h>
 int main() {
 float *x,y;
 x = (float*)malloc(5*sizeof(float));
 y = x[5];
 return 0;
}

[raimue (Rainer Müller)]

Sorry, I cannot reproduce this.

Mac OS X 10.6.5, Xcode 3.2.4, valgrind 3.6.0

[jdswinbank (John Swinbank)]

I see the same problem here on OS X 10.6.6. Running valgrind as superuser seems to fix it, but I'm not sure why that should be necessary.

$ valgrind /usr/bin/true
valgrind: mmap(0x100000000, 36864) failed in UME (load_segment1).
$ sudo valgrind /usr/bin/true
==38475== Memcheck, a memory error detector
==38475== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==38475== Using Valgrind-3.6.0 and LibVEX; rerun with -h for copyright info
==38475== Command: true

[mwoods@…]

I see the exact same problem and output as swinbank@…, including the sudo result.

[jdswinbank (John Swinbank)]

Looks like this is caused by the interaction of Valgrind with Instant Hijack, part of Rogue Amoeba's Airfoil. See ​https://bugs.kde.org/show_bug.cgi?id=262390#c16 for details (with thanks to "FX").