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On Wed, 23 Jan 2013, Paul Pluzhnikov wrote:
This patch allows us to catch use of destructed strings.
Hello,
while a number of the google debug patches are just cheaper versions (that don't break the ABI) of what libstdc++'s debug mode provides, this overwriting of classes on destruction is not as obviously redundant, and I wonder whether something like it (done consistently for many classes) could go to trunk...
Google ref: b/5430313
Ok for google/gcc-4_7 and google/integration?
-- Paul Pluzhnikov
Index: libstdc++-v3/include/ext/sso_string_base.h =================================================================== --- libstdc++-v3/include/ext/sso_string_base.h (revision 195417) +++ libstdc++-v3/include/ext/sso_string_base.h (working copy) @@ -215,7 +215,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION const _Alloc& __a);
~__sso_string_base() - { _M_dispose(); } + { + _M_dispose(); +#ifdef __google_stl_debug_dangling_string + __builtin_memset(this, 0xcd, sizeof(*this)); +#endif + }
_CharT_alloc_type& _M_get_allocator()
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