search for: dispatch_queue_t

...l variable. But in case of many..many threads> 5, after every __sync_add_and_fetch got damaged ... int32_t count = 0; ... int main(int argc, char *argv[]) {    for (i = 1; i < 32; ++i) {      ...         char* name;         asprintf(&name, "test.overcommit.%d", i);         dispatch_queue_t queue = dispatch_queue_create(name, NULL);         free(name);         dispatch_set_target_queue(queue, dispatch_get_global_queue(0,                     dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0)));         /* async queue */         dispatch_async(queue, ^{            __sync_add_and...

...s.cc -fno-common -DPIC -o .libs/asan_interceptors.o In file included from ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_interceptors.cc:15:0: ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_intercepted_functions.h:209:57: error: expected ‘)’ before ‘^’ token dispatch_queue_t dq, void (^work)(void)); ^ etc. So we may be stuck with mach_override until someone steps up to implement the missing blocks support for darwin in FSF gcc. Jack > > On Fri, Nov 30, 2012 at 4:46 AM, Alexander Potapenko &lt...

...o .libs/asan_interceptors.o > In file included from > ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_interceptors.cc:15:0: > ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_intercepted_functions.h:209:57: > error: expected ‘)’ before ‘^’ token > dispatch_queue_t dq, void (^work)(void)); > ^ > etc. So we may be stuck with mach_override until someone steps up to > implement the missing blocks support for darwin in FSF gcc. > --kcc > Jack > > > > > On Fri,...

....o > > In file included from > > ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_interceptors.cc:15:0: > > ../../../../gcc-4.8-20121130/libsanitizer/asan/asan_intercepted_functions.h:209:57: > > error: expected ‘)’ before ‘^’ token > > dispatch_queue_t dq, void (^work)(void)); > > ^ > > etc. So we may be stuck with mach_override until someone steps up to > > implement the missing blocks support for darwin in FSF gcc. > > > > > --kcc > > > >...

Just want to remind everyone that we plan to stop using mach_override in asanin favor of OSX's native function interposition. So, we probably don't want to spend too much effort fixing mach_override. --kcc On Fri, Nov 30, 2012 at 4:46 AM, Alexander Potapenko <glider at google.com>wrote: > Looks like this happens on x86_64 because the position of __cxa_throw > is too far from

Looks like this happens on x86_64 because the position of __cxa_throw is too far from the allocated branch island (should be <2G). This can be solved by allocating the branch islands somewhere near the text segment (look for kIslandEnd in asan_mac.cc, this is currently 0x7fffffdf0000) or by patching the function with a longer instruction sequence that stores the jump target in a register and