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97897a6a42
* lib/stdlib.in.h (print_stack_trace): Make part of the stack-trace module. * lib/stack-trace-impl.h: New file, based on lib/abort-debug.c. * lib/stack-trace.c: New file, based on lib/abort-debug.c. * lib/abort-debug.c: Include stack-trace-impl.h. Remove definitions moved to stack-trace-impl.h. (print_stack_trace): Remove function. * m4/stdlib_h.m4 (gl_STDLIB_H_REQUIRE_DEFAULTS): Initialize GNULIB_STACK_TRACE. (gl_STDLIB_H_DEFAULTS): Initialize CAN_PRINT_STACK_TRACE. * m4/stack-trace.m4: New file, based on m4/abort-debug.m4. * m4/abort-debug.m4 (gl_ABORT_DEBUG_EARLY): Remove macro. (gl_ABORT_DEBUG): Require gl_STDLIB_H_DEFAULTS, gl_STACK_TRACE_EARLY. Set REPLACE_ABORT here. * modules/stdlib (Makefile.am): Substitute GNULIB_STACK_TRACE, CAN_PRINT_STACK_TRACE. * modules/stack-trace: New file. * modules/abort-debug (Depends-on): Add stack-trace. Remove execinfo. (configure.ac-early): Remove section. * DEPENDENCIES: Update.
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* print_stack_trace() function that prints a stack trace.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#if HAVE_LIBBACKTRACE
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# include <backtrace.h>
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static struct backtrace_state *state /* = NULL */;
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static inline void
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# if (__GNUC__ >= 3) || (__clang_major__ >= 4)
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__attribute__ ((always_inline))
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# endif
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print_stack_trace_to (FILE *stream)
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{
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if (state == NULL)
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state = backtrace_create_state (NULL, 0, NULL, NULL);
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/* Pass skip=0, to work around <https://github.com/ianlancetaylor/libbacktrace/issues/60>. */
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fprintf (stream, "Stack trace:\n");
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backtrace_print (state, 0, stream);
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}
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#elif HAVE_EXECINFO_H
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# include <stdio.h>
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# include "execinfo.h"
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static inline void
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# if (__GNUC__ >= 3) || (__clang_major__ >= 4)
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__attribute__ ((always_inline))
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# endif
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print_stack_trace_to (FILE *stream)
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{
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void *buffer[100];
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int max_size = sizeof (buffer) / sizeof (buffer[0]);
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int size = backtrace (buffer, max_size);
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if (size > 0)
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{
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char **symbols = backtrace_symbols (buffer, size);
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if (symbols != NULL)
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{
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int i;
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fprintf (stream, "Stack trace:\n");
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for (i = 0; i < size; i++)
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fprintf (stream, "%s\n", symbols[i]);
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fflush (stream);
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free (symbols);
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}
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}
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}
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#endif
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