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debug.cc [...]: Include execinfo.h. 

2018-05-08  François Dumont  <fdumont@gcc.gnu.org>

	* src/c++11/debug.cc [_GLIBCXX_HAVE_EXECINFO_H]: Include execinfo.h.
	[_GLIBCXX_HAVE_EXECINFO_H](_Error_formatter::_M_error): Render
	backtrace.

From-SVN: r260054
This commit is contained in:
François Dumont 2018-05-08 20:00:52 +00:00
parent 90aabc7e9b
commit e95a74fda2
2 changed files with 31 additions and 0 deletions
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4
libstdc++-v3/ChangeLog
View File

@ -1,5 +1,9 @@
2018-05-08 François Dumont <fdumont@gcc.gnu.org>
* src/c++11/debug.cc [_GLIBCXX_HAVE_EXECINFO_H]: Include execinfo.h.
[_GLIBCXX_HAVE_EXECINFO_H](_Error_formatter::_M_error): Render
backtrace.
* include/debug/macros.h (__glibcxx_check_valid_range_at): New.
* include/debug/functions.h (__check_valid_range): Use latter.
* include/debug/macros.h (__glibcxx_check_valid_constructor_range): New,

27
libstdc++-v3/src/c++11/debug.cc
View File

@ -40,6 +40,10 @@
#include <cxxabi.h> // for __cxa_demangle
#if defined _GLIBCXX_HAVE_EXECINFO_H
# include <execinfo.h> // for backtrace
#endif
#include "mutex_pool.h"
using namespace std;
@ -1043,6 +1047,29 @@ namespace __gnu_debug
print_literal(ctx, "\n");
}
#if defined _GLIBCXX_HAVE_EXECINFO_H
{
void* stack[32];
int nb = backtrace(stack, 32);
// Note that we skip current method symbol.
if (nb > 1)
{
print_literal(ctx, "Backtrace:\n");
auto symbols = backtrace_symbols(stack, nb);
for (int i = 1; i < nb; ++i)
{
print_word(ctx, symbols[i]);
print_literal(ctx, "\n");
}
free(symbols);
ctx._M_first_line = true;
print_literal(ctx, "\n");
}
}
#endif
print_literal(ctx, "Error: ");
// Print the error message