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[WIP] Add a mutex to warning.cpp to ensure that warning messages from different threads don't interfere (#7963)

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* Initial plan

* Add mutex to warning.cpp for thread safety

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
Copilot 2025-10-06 13:38:18 -07:00 • committed by Nikolaj Bjorner
parent d6d1d7f19c
commit 0972ab08bb
1 changed files with 11 additions and 0 deletions
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11
src/util/warning.cpp
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@ -24,6 +24,10 @@ Revision History:
#include "util/buffer.h"
#include "util/vector.h"
#ifndef SINGLE_THREAD
#include <mutex>
#endif
#ifdef _WINDOWS
#if defined( __MINGW32__ ) && ( defined( __GNUG__ ) || defined( __clang__ ) )
#include <crtdbg.h>
@ -67,6 +71,10 @@ static bool g_use_std_stdout = false;
static std::ostream* g_error_stream = nullptr;
static std::ostream* g_warning_stream = nullptr;
#ifndef SINGLE_THREAD
static std::mutex g_warning_mutex;
#endif
void send_warnings_to_stdout(bool flag) {
g_use_std_stdout = flag;
}
@ -129,6 +137,9 @@ void print_msg(std::ostream * out, const char* prefix, const char* msg, va_list
void warning_msg(const char * msg, ...) {
if (g_warning_msgs) {
#ifndef SINGLE_THREAD
std::lock_guard<std::mutex> lock(g_warning_mutex);
#endif
va_list args;
va_start(args, msg);
print_msg(g_warning_stream, "WARNING: ", msg, args);