After discovering a default Mint 13 system (kubuntu backports not used) containing Qt 4.8.1 did not exhibit the sporadic memory errors, some further investigation was done. The errors also did not occur when Qt 4.8.2 was built from source. Before blaming the Qt 4.8.2 from the kubuntu backports, the build directory was wiped and the application was rebuilt from scratch. The sporadic memory errors were no longer occurring, so there must have been a corrupted file in the build directory causing the errors.
Some memory testing investigation was also done on Mint 17 (based on Ubuntu 14.04). The conclusion previously was that valgrind 3.10.0.SVN reported errors differently than 3.7.0 (Mint 13) or 3.9.0 (built from the latest source available). The source for 3.10.0 is now available and 3.10.0 built from source on Mint 13 did not report any additional memory errors. The issue was found to be with the ld-2.19.so library on Mint 17 (Mint 13 has ld-2.15.so). This library appears to contain low-level memory allocation functions.
A different error suppression file was needed for the newer version of this library. The CMake build file was modified to detect the presence of ld-2.19.so (either 32-bit or 64-bit). If present, then a different error suppression file is copied to the build directory. This error suppression file generated on Mint 17 is independent of the version of Qt (the Qt libraries are not referenced), so no configuration of the file is needed.
The error suppression files generated for Qt 4.8.2 and 4.8.6 are also independent of the version of Qt, however, the one generated for Qt 4.8.4 is not. To create a suppression file that works with all versions (at least the ones tested), the suppression file needs to be configured for the specific version of Qt. The file generated from Qt 4.8.4 was used, and this file works with Qt 4.8.1, 4.8.2, and 4.8.6 once all references of "4.8.4" along with the installation directory of Qt are changed.
There are now two error suppression files, one for Mint 13 (ld-2.19.so not present) and one for Mint 17 (ld-2.19.so present). The one for Mint 13 is configured for the version of Qt detected, but the one for Mint 17 is not. Mint 17 has Qt 4.8.6, so no other version of Qt should be present. This commit was put in the develop branch since it is not related to the STL changes.
[branch develop commit 2fb73b6892]
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