public inbox for libstdc++-cvs@sourceware.org help / color / mirror / Atom feed
From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r13-4543] libstdc++: Pass error handler to libbacktrace functions Date: Wed, 7 Dec 2022 20:06:40 +0000 (GMT) [thread overview] Message-ID: <20221207200640.D2EE23836797@sourceware.org> (raw) https://gcc.gnu.org/g:3ad0f470c16d5528a5283060b007f8b419c33c92 commit r13-4543-g3ad0f470c16d5528a5283060b007f8b419c33c92 Author: Jonathan Wakely <jwakely@redhat.com> Date: Wed Nov 30 12:32:53 2022 +0000 libstdc++: Pass error handler to libbacktrace functions Also pass threaded=1 to __glibcxx_backtrace_create_state and remove some of the namespace scope declarations in the header. Co-authored-by: François Dumont <frs.dumont@gmail.com> libstdc++-v3/ChangeLog: * include/debug/formatter.h [_GLIBCXX_DEBUG_BACKTRACE] (_Error_formatter::_Error_formatter): Pass error handler to __glibcxx_backtrace_create_state. Pass 1 for threaded argument. (_Error_formatter::_S_err): Define empty function. * src/c++11/debug.cc (_Error_formatter::_M_error): Pass error handler to __glibcxx_backtrace_full. Diff: --- libstdc++-v3/include/debug/formatter.h | 35 ++++++++++++---------------------- libstdc++-v3/src/c++11/debug.cc | 19 +++++++++++++++++- 2 files changed, 30 insertions(+), 24 deletions(-) diff --git a/libstdc++-v3/include/debug/formatter.h b/libstdc++-v3/include/debug/formatter.h index f120163c6d4..e8a83a21bde 100644 --- a/libstdc++-v3/include/debug/formatter.h +++ b/libstdc++-v3/include/debug/formatter.h @@ -32,32 +32,17 @@ #include <bits/c++config.h> #if _GLIBCXX_HAVE_STACKTRACE -struct __glibcxx_backtrace_state; - extern "C" { - __glibcxx_backtrace_state* + struct __glibcxx_backtrace_state* __glibcxx_backtrace_create_state(const char*, int, void(*)(void*, const char*, int), void*); - - typedef int (*__glibcxx_backtrace_full_callback) ( - void*, __UINTPTR_TYPE__, const char *, int, const char*); - - typedef void (*__glibcxx_backtrace_error_callback) ( - void*, const char*, int); - - typedef int (*__glibcxx_backtrace_full_func) ( - __glibcxx_backtrace_state*, int, - __glibcxx_backtrace_full_callback, - __glibcxx_backtrace_error_callback, - void*); - int __glibcxx_backtrace_full( - __glibcxx_backtrace_state*, int, - __glibcxx_backtrace_full_callback, - __glibcxx_backtrace_error_callback, + struct __glibcxx_backtrace_state*, int, + int (*)(void*, __UINTPTR_TYPE__, const char *, int, const char*), + void (*)(void*, const char*, int), void*); } #endif @@ -609,10 +594,10 @@ namespace __gnu_debug , _M_function(__function) #if _GLIBCXX_HAVE_STACKTRACE # ifdef _GLIBCXX_DEBUG_BACKTRACE - , _M_backtrace_state(__glibcxx_backtrace_create_state(0, 0, 0, 0)) + , _M_backtrace_state(__glibcxx_backtrace_create_state(0, 1, _S_err, 0)) , _M_backtrace_full(&__glibcxx_backtrace_full) # else - , _M_backtrace_state() + , _M_backtrace_state(0) # endif #endif { } @@ -631,8 +616,12 @@ namespace __gnu_debug const char* _M_text; const char* _M_function; #if _GLIBCXX_HAVE_STACKTRACE - __glibcxx_backtrace_state* _M_backtrace_state; - __glibcxx_backtrace_full_func _M_backtrace_full; + struct __glibcxx_backtrace_state* _M_backtrace_state; + // TODO: Remove _M_backtrace_full after __glibcxx_backtrace_full is moved + // from libstdc++_libbacktrace.a to libstdc++.so: + __decltype(&__glibcxx_backtrace_full) _M_backtrace_full; + + static void _S_err(void*, const char*, int) { } #endif public: diff --git a/libstdc++-v3/src/c++11/debug.cc b/libstdc++-v3/src/c++11/debug.cc index 9eda38023f7..83996ffe622 100644 --- a/libstdc++-v3/src/c++11/debug.cc +++ b/libstdc++-v3/src/c++11/debug.cc @@ -1141,6 +1141,23 @@ namespace return ret; } + + void + print_backtrace_error(void* data, const char* msg, int errnum) + { + PrintContext& ctx = *static_cast<PrintContext*>(data); + + print_literal(ctx, "Backtrace unavailable: "); + print_word(ctx, msg ? msg : "<unknown error>"); + if (errnum > 0) + { + char buf[64]; + int written = __builtin_sprintf(buf, " (errno=%d)\n", errnum); + print_word(ctx, buf, written); + } + else + print_literal(ctx, "\n"); + } #endif } @@ -1193,7 +1210,7 @@ namespace __gnu_debug { print_literal(ctx, "Backtrace:\n"); _M_backtrace_full( - _M_backtrace_state, 1, print_backtrace, nullptr, &ctx); + _M_backtrace_state, 1, print_backtrace, print_backtrace_error, &ctx); ctx._M_first_line = true; print_literal(ctx, "\n"); }
reply other threads:[~2022-12-07 20:06 UTC|newest] Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20221207200640.D2EE23836797@sourceware.org \ --to=redi@gcc.gnu.org \ --cc=gcc-cvs@gcc.gnu.org \ --cc=libstdc++-cvs@gcc.gnu.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).