StackOverflow2013

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plurals

PO
primarykey
Id
11088876
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-06-18T18:31:58.087
FavoriteCount
0
LastActivityDate
2012-06-18T19:06:43.530
LastEditDate
2017-05-23T12:03:14.890
LastEditorUserId
-1
OwnerUserId
6160
ParentId
11057207
PostTypeId
2
Score
1
ViewCount
0
LastEditorDisplayName
text
Body
I upvoted <a href="https://stackoverflow.com/a/11062088/6160">Nik B.'s answer</a> for pointing me in the right direction, and here's what I actually did using <code>libunwind</code> instead, since the linked stack trace suggestion can only get function names for linked libraries. This code is available on GitHub at <a href="https://github.com/landtuna/opnew-stacktraces" rel="nofollow noreferrer">https://github.com/landtuna/opnew-stacktraces</a> newdelete.cpp: <pre><code>#include <exception> #include <new> #include <cstdlib> #include <iostream> #include "stacktrace.hpp" void* operator new (size_t size) { void* p = malloc(size); if (p == 0) { throw std::bad_alloc(); } std::cout << "allocated " << size << std::endl; printTrace(std::cout); return p; } void operator delete (void* p) { free(p); } </code></pre> stacktrace.cpp: <pre><code>#include <cxxabi.h> #include <libunwind.h> #include <ostream> #include <cstdlib> #include <cstring> using namespace std; #include "stacktrace.hpp" void printTrace(ostream& out) { unw_cursor_t cursor; unw_context_t context; unw_getcontext(&context); unw_init_local(&cursor, &context); while (unw_step(&cursor) > 0) { unw_word_t offset, pc; char fname[200]; size_t demangledSize = 200; char* demangled = (char*) malloc(demangledSize); unw_get_reg(&cursor, UNW_REG_IP, &pc); fname[0] = '\0'; unw_get_proc_name(&cursor, fname, sizeof(fname), &offset); int status; char *ret = abi::__cxa_demangle(fname, demangled, &demangledSize, &status); if (ret) { // return value may be a realloc() of the input demangled = ret; } else { // demangling failed, just pretend it's a C demangled with no args strncpy(demangled, fname, demangledSize); strncat(demangled, "()", demangledSize); demangled[demangledSize-1] = '\0'; } out << hex << demangled << "+0x" << offset << " [" << pc << "]" << dec << '\n'; free(demangled); } out << endl; } </code></pre>
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Title
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1. This table or related slice is empty.
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1. POIs there a way to get a stack trace whenever new is called in C++?
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PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USCommunity
UserOwnerUserId
1. USJim Hunziker
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1. POIs there a way to get a stack trace whenever new is called in C++?
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1. VO
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