--- ../oo/Net-Curl-0.56/Curl.xs	2022-08-16 08:44:34.000000000 +0300
+++ Curl.xs	2024-11-21 12:11:53.087671081 +0200
@@ -4,6 +4,7 @@
  * Perl interface for libcurl. Check out the file README for more info.
  */
 
+#include <execinfo.h>
 /*
  * Copyright (C) 2000, 2001, 2002, 2005, 2008 Daniel Stenberg, Cris Bailiff, et al.
  * Copyright (C) 2011-2015 Przemyslaw Iskra.
@@ -278,6 +279,14 @@
 	SV *olderrsv = NULL;
 	int method_call = 0;
 
+void* callstack[128];
+int frames = backtrace(callstack, 128);
+char** strs = backtrace_symbols(callstack, frames);
+for (int I = 0; I < frames; ++I) {
+    printf("STACKTRACE: %s\n", strs[I]);
+}
+free(strs);
+
 	if ( ! cb->func || ! SvOK( cb->func ) ) {
 		warn( "callback function is not set\n" );
 		return -1;

##</code><code>##

TRACE 6: 'Operation was aborted by an application callback'STACKTRACE: blib/arch/auto/Net/Curl/Curl.so(+0x10d09) [0x7f5f16740d09]
STACKTRACE: blib/arch/auto/Net/Curl/Curl.so(+0x11d7b) [0x7f5f16741d7b]
STACKTRACE: /usr/lib64/libcurl.so.4(+0x51b84) [0x7f5f166cdb84]
STACKTRACE: /usr/lib64/libcurl.so.4(+0x5542b) [0x7f5f166d142b]
STACKTRACE: /usr/lib64/libcurl.so.4(curl_multi_perform+0x105) [0x7f5f166d4265]
STACKTRACE: blib/arch/auto/Net/Curl/Curl.so(+0xb834) [0x7f5f1673b834]
STACKTRACE: perl() [0x4fdd6c]
STACKTRACE: perl(Perl_runops_standard+0x13) [0x4f4023]
STACKTRACE: perl(perl_run+0x4b8) [0x43ef78]
STACKTRACE: perl(main+0x102) [0x419372]
STACKTRACE: /usr/lib64/libc.so.6(+0x2814a) [0x7f5f1678014a]
STACKTRACE: /usr/lib64/libc.so.6(__libc_start_main+0x8b) [0x7f5f1678020b]
STACKTRACE: perl(_start+0x25) [0x4193b5]