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[libc++][hardening] Introduce a dylib function to log hardening errors. #148266

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Merged
merged 13 commits into from
Jul 15, 2025
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[libc++][hardening] Introduce a dylib function to log hardening errors. #148266

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[libc++][hardening] Introduce a dylib function to log hardening errors.
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1 change: 1 addition & 0 deletions libcxx/include/CMakeLists.txt
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Expand Up @@ -535,6 +535,7 @@ set(files
__locale_dir/time.h
__locale_dir/wbuffer_convert.h
__locale_dir/wstring_convert.h
__log_error
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Could we move all these functions into a single header like __hardening_utils?

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If we keep the current approach where the logging function is more generic and not exclusively for hardening, then IMO it shouldn't be in __hardening_utils; although perhaps something more generic like __error_handling_utils might make sense -- WDYT?

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Sounds good to me as well. The main thing I'd like to avoid is having a bunch of tiny headers for very closely related utilities.

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FWIW, Costa and I discussed this previously and we were thinking to reorganize the top-level headers like __verbose_abort, __assert & friends in a follow-up patch where we'll have an overall view.

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Will do in an immediate follow-up patch.

__math/abs.h
__math/copysign.h
__math/error_functions.h
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5 changes: 5 additions & 0 deletions libcxx/include/__configuration/availability.h
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Expand Up @@ -304,6 +304,11 @@
#define _LIBCPP_AVAILABILITY_HAS_VERBOSE_ABORT _LIBCPP_INTRODUCED_IN_LLVM_15
#define _LIBCPP_AVAILABILITY_VERBOSE_ABORT _LIBCPP_INTRODUCED_IN_LLVM_15_ATTRIBUTE

// This controls whether the library provides a function to log errors without terminating the program (used in
// particular by the `observe` assertion semantic).
#define _LIBCPP_AVAILABILITY_HAS_LOG_ERROR _LIBCPP_INTRODUCED_IN_LLVM_21
#define _LIBCPP_AVAILABILITY_LOG_ERROR _LIBCPP_INTRODUCED_IN_LLVM_21_ATTRIBUTE

// This controls the availability of the C++17 std::pmr library,
// which is implemented in large part in the built library.
//
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50 changes: 50 additions & 0 deletions libcxx/include/__log_error
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@@ -0,0 +1,50 @@
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___LOG_ERROR
#define _LIBCPP___LOG_ERROR

#include <__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

enum class _LogErrorReason {
// Where possible, it logs in a way that indicates a fatal error (which might include capturing the stack trace).
_HardeningFailure
};

// This function should never be called directly from the code -- it should only be called through the
// `_LIBCPP_LOG_ERROR` macro.
_LIBCPP_AVAILABILITY_LOG_ERROR _LIBCPP_EXPORTED_FROM_ABI void
__log_error(_LogErrorReason __reason, const char* __message) _NOEXCEPT;
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Should we pass a string_view instead? Most of the time we probably have a string literal, and passing a string_view would avoid calling strlen all the time.

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I'm a bit wary of doing it from a layering perspective. This is a low-level function used by hardening, and having its implementation use hardened classes that might theoretically try to call it again seems a bit off. While we could make sure that we don't use any parts of string_view that are hardened, I'd still prefer the logging function to operate on a level "below" hardening, so to speak.

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Fair enough. What do you think about having a small wrapper in the headers that just calls __builtin_strlen and passes the char* and lenght to a dylib function?

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This header is going to be included from almost all other headers, like __assert. So we really can't depend on the definition of string_view. We could define our own simple string_view type but I wonder if it's worth it. Is that what you had in mind (I mean, defining our own string_view approximation)?

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Also, I think it is quite useful to assume that the message we're logging is null terminated, since we then call APIs that also make that assumption in the implementation of the logging function.

If we take a (possibly non-null-terminated) char const* and a length instead, we'd have to basically copy that string into a null terminated buffer (allocated on the fly?) before we can pass it to e.g. fputs. That seems like a lot of additional work/complexity for relatively little actual benefit. WDYT?

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I think it would be enough to have

void __log_hardening_failure(const char*, size_t);

void __log_hardening_failure(const char* __str) { __log_hardening_failure(__str, __builtin_strlen(__str)); }

Re. null termination, we could also use fwrite to give size information to the libc. I'm actually a bit confused. __log_hardening_failue shouldn't terminate, right? The platform-specific APIs do look like they're terminating though. Or am I mis-reading this?

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__log_hardening_failue shouldn't terminate, right?

Yes, it's a regular, non-terminating, function.

The platform-specific APIs do look like they're terminating though. Or am I mis-reading this?

They do not terminate. On Apple platforms, os_fault_with_payload produces crash data as if a crash occurred but doesn't actually crash the program. On Android, I don't think logging with syslog ever terminates regardless of the severity level, and android_set_abort_message, to the best of my knowledge, merely copies the error message to some global location.

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Re. null termination, we could also use fwrite to give size information to the libc.

The most important part of this function is calling a system-specific API(s); all the ones we are currently using expect a null-terminated string, and since these syscalls tend to follow historical C conventions, we can expect any new APIs we might add in the future to also accept C strings, more likely than not. At most, we can prevent one call to strlen that would otherwise happen in fputs, at the cost of complicating the interface and increasing the size of the dylib. We would also end up with a function with a weird interface because normally accepting a (string, len) pair implies that the string is not null-terminated, at least not guaranteed to be so. We can document this quirk but it's still suboptimal.

Moreover, I simply don't think this function needs this level of microoptimization. The call to strlen over the relatively short strings that we're using is unlikely to be significant compared to the several syscalls that this function is making, and taking a step back, I don't see this function as performance-critical. In a well-defined program, it should never be invoked at all; while of course bugs happen (otherwise this function would not be necessary), I think it's reasonable to expect it to only be called rarely, and if it happens to be called in a tight loop (e.g. if there's a repeated OOB access in a loop), the right thing to do is fix the OOB access, not optimize the function (and once again, given all the logging we're doing, I strongly doubt skipping a call to strlen would make any worthwhile difference in this case).

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@philnik777 Let's continue this conversation in #149452


// _LIBCPP_LOG_ERROR(message)
//
// This macro is used to log an error without terminating the program (as is the case for hardening failures if the
// `observe` assertion semantic is used, for example).

#if !defined(_LIBCPP_LOG_ERROR)

# if !_LIBCPP_AVAILABILITY_HAS_LOG_ERROR
// The decltype is there to suppress -Wunused warnings in this configuration.
void __use(const char*);
# define _LIBCPP_LOG_ERROR(__message) (decltype(::std::__use(__message))())
# else
# define _LIBCPP_LOG_ERROR(__reason, __message) ::std::__log_error(__reason, __message)
# endif

#endif // !defined(_LIBCPP_LOG_ERROR)

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___LOG_ERROR
3 changes: 3 additions & 0 deletions libcxx/include/module.modulemap.in
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Expand Up @@ -2353,6 +2353,9 @@ module std [system] {
header "__std_mbstate_t.h"
export *
}
module log_error {
header "__log_error"
}
module verbose_abort {
header "__verbose_abort"
}
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5 changes: 3 additions & 2 deletions libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
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Expand Up @@ -534,6 +534,7 @@
{'is_defined': True, 'name': '__ZNKSt3__115basic_streambufIwNS_11char_traitsIwEEE6getlocEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__115error_condition7messageEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__117bad_function_call4whatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__117moneypunct_bynameIcLb0EE11do_groupingEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__117moneypunct_bynameIcLb0EE13do_neg_formatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__117moneypunct_bynameIcLb0EE13do_pos_formatEv', 'type': 'FUNC'}
Expand Down Expand Up @@ -944,6 +945,7 @@
{'is_defined': True, 'name': '__ZNSt3__110to_wstringEx', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__110to_wstringEy', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__111__call_onceERVmPvPFvS2_E', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__111__log_errorENS_15_LogErrorReasonEPKc', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__111__money_getIcE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_SF_Ri', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__111__money_getIwE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_SJ_Ri', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__111__money_putIcE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_Ri', 'type': 'FUNC'}
Expand Down Expand Up @@ -1125,6 +1127,7 @@
{'is_defined': True, 'name': '__ZNSt3__112system_errorD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__112system_errorD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__112system_errorD2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113__hash_memoryEPKvm', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE11__read_modeEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE12__write_modeEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113basic_filebufIcNS_11char_traitsIcEEE4openEPKcj', 'type': 'FUNC'}
Expand Down Expand Up @@ -1305,7 +1308,6 @@
{'is_defined': True, 'name': '__ZNSt3__113shared_futureIvED1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113shared_futureIvED2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113shared_futureIvEaSERKS1_', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__113__hash_memoryEPKvm', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__114__num_get_base10__get_baseERNS_8ios_baseE', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__114__num_get_base5__srcE', 'size': 0, 'type': 'OBJECT'}
{'is_defined': True, 'name': '__ZNSt3__114__num_put_base12__format_intEPcPKcbj', 'type': 'FUNC'}
Expand Down Expand Up @@ -1508,7 +1510,6 @@
{'is_defined': True, 'name': '__ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNKSt3__117bad_function_call4whatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
{'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
Expand Down
5 changes: 3 additions & 2 deletions libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
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Expand Up @@ -170,6 +170,7 @@
{'is_defined': True, 'name': '_ZNKSt6__ndk115basic_streambufIwNS_11char_traitsIwEEE6getlocEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk115basic_stringbufIcNS_11char_traitsIcEENS_9allocatorIcEEE3strEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk115error_condition7messageEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk117bad_function_call4whatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk117moneypunct_bynameIcLb0EE11do_groupingEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk117moneypunct_bynameIcLb0EE13do_neg_formatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk117moneypunct_bynameIcLb0EE13do_pos_formatEv', 'type': 'FUNC'}
Expand Down Expand Up @@ -580,6 +581,7 @@
{'is_defined': True, 'name': '_ZNSt6__ndk110to_wstringEx', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk110to_wstringEy', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk111__call_onceERVmPvPFvS2_E', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk111__log_errorENS_15_LogErrorReasonEPKc', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk111__money_getIcE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_SF_Ri', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk111__money_getIwE13__gather_infoEbRKNS_6localeERNS_10money_base7patternERwS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEERNS9_IwNSA_IwEENSC_IwEEEESJ_SJ_Ri', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk111__money_putIcE13__gather_infoEbbRKNS_6localeERNS_10money_base7patternERcS8_RNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEESF_SF_Ri', 'type': 'FUNC'}
Expand Down Expand Up @@ -761,6 +763,7 @@
{'is_defined': True, 'name': '_ZNSt6__ndk112system_errorD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk112system_errorD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk112system_errorD2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113__hash_memoryEPKvj', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113basic_filebufIcNS_11char_traitsIcEEE11__read_modeEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113basic_filebufIcNS_11char_traitsIcEEE12__write_modeEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113basic_filebufIcNS_11char_traitsIcEEE4openEPKcj', 'type': 'FUNC'}
Expand Down Expand Up @@ -941,7 +944,6 @@
{'is_defined': True, 'name': '_ZNSt6__ndk113shared_futureIvED1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113shared_futureIvED2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113shared_futureIvEaSERKS1_', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk113__hash_memoryEPKvj', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk114__num_get_base10__get_baseERNS_8ios_baseE', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk114__num_get_base5__srcE', 'size': 33, 'type': 'OBJECT'}
{'is_defined': True, 'name': '_ZNSt6__ndk114__num_put_base12__format_intEPcPKcbj', 'type': 'FUNC'}
Expand Down Expand Up @@ -1144,7 +1146,6 @@
{'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD0Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD1Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD2Ev', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNKSt6__ndk117bad_function_call4whatEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk117iostream_categoryEv', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
{'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
Expand Down
5 changes: 3 additions & 2 deletions libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
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Expand Up @@ -96,6 +96,7 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE6do_outERPcPKwS5_RS5_S2_S2_S3_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115__codecvt_utf16IwLb1EE9do_lengthERPcPKcS5_m', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__115error_condition7messageEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__117bad_function_call4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIcE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__118__time_get_storageIwE15__do_date_orderEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__119__shared_weak_count13__get_deleterERKSt9type_info', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
Expand Down Expand Up @@ -311,6 +312,7 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110to_wstringEx', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__110to_wstringEy', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111__call_onceERVmPvPFvS2_E', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111__log_errorENS_15_LogErrorReasonEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111regex_errorC1ENS_15regex_constants10error_typeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111regex_errorC2ENS_15regex_constants10error_typeE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111regex_errorD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
Expand Down Expand Up @@ -410,6 +412,7 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112system_errorD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
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{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113random_deviceC2ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113random_deviceD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
Expand All @@ -418,7 +421,6 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113shared_futureIvED1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113shared_futureIvED2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113shared_futureIvEaSERKS1_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__113__hash_memoryEPKvm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__114__num_get_base10__get_baseERNS_8ios_baseE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__114__num_get_base5__srcE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__114__num_put_base12__format_intEPcPKcbj', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
Expand Down Expand Up @@ -503,7 +505,6 @@
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNKSt3__117bad_function_call4whatEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
Expand Down
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