Narrowing the problem: it isn't any of the Mir code, or the generated
code, or explicit calls into libprotobuf-lite.
The following program loads and unloads libprotobuf-lite.so from 2.6.1
successfully. With 3.0.0 it fails to unload.
#include <stdio.h>
#include <dlfcn.h>
int main(int argc, char** argv)
{
char const* libname = argc <= 1 ? "libprotobuf-lite.so" : argv[1];
void* dl = NULL;
dl = dlopen(libname, RTLD_NOW);
if (!dl)
{
printf("dlopen() error: (%s)\n", dlerror());
return 1;
}
printf("library loaded\n");
dlclose(dl);
dl = dlopen(libname, RTLD_NOW|RTLD_NOLOAD);
if (dl)
{
printf("library didn't unload: (%s)\n", libname);
dlclose(dl);
return 1;
}
printf("library unloaded\n");
return 0;
}
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Touch seeded packages, which is subscribed to mir in Ubuntu.
https://bugs.launchpad.net/bugs/1619616
Title:
Mir test fails with protobuf3: Protobuf-can-be-reloaded (SEGFAULT)
Status in Mir:
Invalid
Status in mir package in Ubuntu:
Invalid
Status in protobuf package in Ubuntu:
In Progress
Bug description:
builds with 3.0.0-7, then has one failing test:
test 19
Start 19: Protobuf-can-be-reloaded
19: Test command:
/<<BUILDDIR>>/mir-0.24.0+16.10.20160815.3/obj-powerpc64le-linux-gnu/bin/mir_test_reload_protobuf
19: Test timeout computed to be: 9.99988e+06
19/19 Test #19: Protobuf-can-be-reloaded
..........................***Exception: SegFault 0.17 sec
95% tests passed, 1 tests failed out of 19
Total Test time (real) = 125.73 sec
The following tests FAILED:
19 - Protobuf-can-be-reloaded (SEGFAULT)
Errors while running CTest
Makefile:85: recipe for target 'test' failed
make[2]: *** [test] Error 8
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