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tests: Test libexecinfo backtrace call througth signal trampoline

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It should fails on Aarch64 until https://reviews.llvm.org/D155066
is not merged.

Reviewed by:
Differential Revision:	https://reviews.freebsd.org/D41129
This commit is contained in:
Dmitry Chagin 2023-07-28 12:10:27 +03:00
parent 4281dab8bc
commit df1ea58873
2 changed files with 78 additions and 0 deletions
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3
lib/libexecinfo/tests/Makefile
View file

@ -14,7 +14,10 @@ STRIP=
# so that doesn't seem useful.
NETBSD_ATF_TESTS_C+= backtrace_test
ATF_TESTS_C+= sigtramp_test
LIBADD.backtrace_test+= execinfo
LIBADD.sigtramp_test+= execinfo
.include <netbsd-tests.test.mk>

75
lib/libexecinfo/tests/sigtramp_test.c Normal file
View file

@ -0,0 +1,75 @@
/*-
* Copyright (c) 2023 Dmitry Chagin <dchagin@FreeBSD.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/wait.h>
#include <execinfo.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <atf-c.h>
#define BT_FUNCTIONS 10
void handler(int);
__noinline void
handler(int signum __unused)
{
void *addresses[BT_FUNCTIONS];
char **symbols;
size_t n, i, match;
n = backtrace(addresses, nitems(addresses));
ATF_REQUIRE(n > 1);
symbols = backtrace_symbols(addresses, n);
ATF_REQUIRE(symbols != NULL);
match = -1;
for (i = 0; i < n; i++) {
printf("%zu: %p, %s\n", i, addresses[i], symbols[i]);
if (strstr(symbols[i], "<main+") != NULL)
match = i;
}
ATF_REQUIRE(match > 0);
printf("match at %zu, symbols %zu\n", match, n);
}
ATF_TC_WITHOUT_HEAD(test_backtrace_sigtramp);
ATF_TC_BODY(test_backtrace_sigtramp, tc)
{
struct sigaction act;
pid_t child;
int status;
memset(&act, 0, sizeof(act));
act.sa_handler = handler;
sigemptyset(&act.sa_mask);
sigaction(SIGUSR1, &act, NULL);
child = fork();
ATF_REQUIRE(child != -1);
if (child == 0) {
kill(getppid(), SIGUSR1);
_exit(0);
} else
wait(&status);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, test_backtrace_sigtramp);
return (atf_no_error());
}