Typically stdin, stdout, stderr are treated as reserved identifiers under ISO/ANSI C and libc implementations further define these as macros, both in glibc and musl <stdio.h>.
However, while glibc defines: ... /* Standard streams. */ extern FILE *stdin; /* Standard input stream. */ extern FILE *stdout; /* Standard output stream. */ extern FILE *stderr; /* Standard error output stream. */ /* C89/C99 say they're macros. Make them happy. */ #define stdin stdin #define stdout stdout #define stderr stderr ...
musl instead uses (legally): ... extern FILE *const stdin; extern FILE *const stdout; extern FILE *const stderr;
#define stdin (stdin) #define stdout (stdout) #define stderr (stderr) ...
The latter results in compile errors when the names are reused as fields of 'struct test_env' and elsewhere in test_progs.[ch] and reg_bounds.c.
Rename the fields to stdout_saved and stderr_saved to avoid many errors seen building against musl, e.g.:
In file included from test_progs.h:6, from test_progs.c:5: test_progs.c: In function 'print_test_result': test_progs.c:237:21: error: expected identifier before '(' token 237 | fprintf(env.stdout, "#%-*d %s:", TEST_NUM_WIDTH, test->test_num, test->test_name); | ^~~~~~ test_progs.c:237:9: error: too few arguments to function 'fprintf' 237 | fprintf(env.stdout, "#%-*d %s:", TEST_NUM_WIDTH, test->test_num, test->test_name); | ^~~~~~~
Link: https://lore.kernel.org/bpf/ZqR2DuHdBXPX%2Fyx8@kodidev-ubuntu/ Signed-off-by: Tony Ambardar tony.ambardar@gmail.com --- .../selftests/bpf/prog_tests/reg_bounds.c | 2 +- tools/testing/selftests/bpf/test_progs.c | 66 +++++++++---------- tools/testing/selftests/bpf/test_progs.h | 8 +-- 3 files changed, 38 insertions(+), 38 deletions(-)
diff --git a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c index 0da4225749bd..467027236d30 100644 --- a/tools/testing/selftests/bpf/prog_tests/reg_bounds.c +++ b/tools/testing/selftests/bpf/prog_tests/reg_bounds.c @@ -1487,7 +1487,7 @@ static int verify_case_opt(struct ctx *ctx, enum num_t init_t, enum num_t cond_t u64 elapsed_ns = get_time_ns() - ctx->start_ns; double remain_ns = elapsed_ns / progress * (1 - progress);
- fprintf(env.stderr, "PROGRESS (%s): %d/%d (%.2lf%%), " + fprintf(env.stderr_saved, "PROGRESS (%s): %d/%d (%.2lf%%), " "elapsed %llu mins (%.2lf hrs), " "ETA %.0lf mins (%.2lf hrs)\n", ctx->progress_ctx, diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c index d5d0cb4eb197..60fafa2f1ed7 100644 --- a/tools/testing/selftests/bpf/test_progs.c +++ b/tools/testing/selftests/bpf/test_progs.c @@ -51,15 +51,15 @@ static void stdio_hijack_init(char **log_buf, size_t *log_cnt)
stdout = open_memstream(log_buf, log_cnt); if (!stdout) { - stdout = env.stdout; + stdout = env.stdout_saved; perror("open_memstream"); return; }
if (env.subtest_state) - env.subtest_state->stdout = stdout; + env.subtest_state->stdout_saved = stdout; else - env.test_state->stdout = stdout; + env.test_state->stdout_saved = stdout;
stderr = stdout; #endif @@ -73,8 +73,8 @@ static void stdio_hijack(char **log_buf, size_t *log_cnt) return; }
- env.stdout = stdout; - env.stderr = stderr; + env.stdout_saved = stdout; + env.stderr_saved = stderr;
stdio_hijack_init(log_buf, log_cnt); #endif @@ -91,13 +91,13 @@ static void stdio_restore_cleanup(void) fflush(stdout);
if (env.subtest_state) { - fclose(env.subtest_state->stdout); - env.subtest_state->stdout = NULL; - stdout = env.test_state->stdout; - stderr = env.test_state->stdout; + fclose(env.subtest_state->stdout_saved); + env.subtest_state->stdout_saved = NULL; + stdout = env.test_state->stdout_saved; + stderr = env.test_state->stdout_saved; } else { - fclose(env.test_state->stdout); - env.test_state->stdout = NULL; + fclose(env.test_state->stdout_saved); + env.test_state->stdout_saved = NULL; } #endif } @@ -110,13 +110,13 @@ static void stdio_restore(void) return; }
- if (stdout == env.stdout) + if (stdout == env.stdout_saved) return;
stdio_restore_cleanup();
- stdout = env.stdout; - stderr = env.stderr; + stdout = env.stdout_saved; + stderr = env.stderr_saved; #endif }
@@ -244,25 +244,25 @@ static void print_test_result(const struct prog_test_def *test, const struct tes int skipped_cnt = test_state->skip_cnt; int subtests_cnt = test_state->subtest_num;
- fprintf(env.stdout, "#%-*d %s:", TEST_NUM_WIDTH, test->test_num, test->test_name); + fprintf(env.stdout_saved, "#%-*d %s:", TEST_NUM_WIDTH, test->test_num, test->test_name); if (test_state->error_cnt) - fprintf(env.stdout, "FAIL"); + fprintf(env.stdout_saved, "FAIL"); else if (!skipped_cnt) - fprintf(env.stdout, "OK"); + fprintf(env.stdout_saved, "OK"); else if (skipped_cnt == subtests_cnt || !subtests_cnt) - fprintf(env.stdout, "SKIP"); + fprintf(env.stdout_saved, "SKIP"); else - fprintf(env.stdout, "OK (SKIP: %d/%d)", skipped_cnt, subtests_cnt); + fprintf(env.stdout_saved, "OK (SKIP: %d/%d)", skipped_cnt, subtests_cnt);
- fprintf(env.stdout, "\n"); + fprintf(env.stdout_saved, "\n"); }
static void print_test_log(char *log_buf, size_t log_cnt) { log_buf[log_cnt] = '\0'; - fprintf(env.stdout, "%s", log_buf); + fprintf(env.stdout_saved, "%s", log_buf); if (log_buf[log_cnt - 1] != '\n') - fprintf(env.stdout, "\n"); + fprintf(env.stdout_saved, "\n"); }
static void print_subtest_name(int test_num, int subtest_num, @@ -273,14 +273,14 @@ static void print_subtest_name(int test_num, int subtest_num,
snprintf(test_num_str, sizeof(test_num_str), "%d/%d", test_num, subtest_num);
- fprintf(env.stdout, "#%-*s %s/%s", + fprintf(env.stdout_saved, "#%-*s %s/%s", TEST_NUM_WIDTH, test_num_str, test_name, subtest_name);
if (result) - fprintf(env.stdout, ":%s", result); + fprintf(env.stdout_saved, ":%s", result);
- fprintf(env.stdout, "\n"); + fprintf(env.stdout_saved, "\n"); }
static void jsonw_write_log_message(json_writer_t *w, char *log_buf, size_t log_cnt) @@ -465,7 +465,7 @@ bool test__start_subtest(const char *subtest_name) memset(subtest_state, 0, sub_state_size);
if (!subtest_name || !subtest_name[0]) { - fprintf(env.stderr, + fprintf(env.stderr_saved, "Subtest #%d didn't provide sub-test name!\n", state->subtest_num); return false; @@ -473,7 +473,7 @@ bool test__start_subtest(const char *subtest_name)
subtest_state->name = strdup(subtest_name); if (!subtest_state->name) { - fprintf(env.stderr, + fprintf(env.stderr_saved, "Subtest #%d: failed to copy subtest name!\n", state->subtest_num); return false; @@ -1043,7 +1043,7 @@ void crash_handler(int signum)
sz = backtrace(bt, ARRAY_SIZE(bt));
- if (env.stdout) + if (env.stdout_saved) stdio_restore(); if (env.test) { env.test_state->error_cnt++; @@ -1359,7 +1359,7 @@ static void calculate_summary_and_print_errors(struct test_env *env) if (env->json) { w = jsonw_new(env->json); if (!w) - fprintf(env->stderr, "Failed to create new JSON stream."); + fprintf(env->stderr_saved, "Failed to create new JSON stream."); }
if (w) { @@ -1708,8 +1708,8 @@ int main(int argc, char **argv) return -1; }
- env.stdout = stdout; - env.stderr = stderr; + env.stdout_saved = stdout; + env.stderr_saved = stderr;
env.has_testmod = true; if (!env.list_test_names) { @@ -1717,7 +1717,7 @@ int main(int argc, char **argv) unload_bpf_testmod(verbose());
if (load_bpf_testmod(verbose())) { - fprintf(env.stderr, "WARNING! Selftests relying on bpf_testmod.ko will be skipped.\n"); + fprintf(env.stderr_saved, "WARNING! Selftests relying on bpf_testmod.ko will be skipped.\n"); env.has_testmod = false; } } @@ -1795,7 +1795,7 @@ int main(int argc, char **argv) }
if (env.list_test_names) { - fprintf(env.stdout, "%s\n", test->test_name); + fprintf(env.stdout_saved, "%s\n", test->test_name); env.succ_cnt++; continue; } diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h index b1e949fb16cf..cb9d6d46826b 100644 --- a/tools/testing/selftests/bpf/test_progs.h +++ b/tools/testing/selftests/bpf/test_progs.h @@ -75,7 +75,7 @@ struct subtest_state { bool skipped; bool filtered;
- FILE *stdout; + FILE *stdout_saved; };
struct test_state { @@ -92,7 +92,7 @@ struct test_state { size_t log_cnt; char *log_buf;
- FILE *stdout; + FILE *stdout_saved; };
struct test_env { @@ -111,8 +111,8 @@ struct test_env { struct test_state *test_state; /* current running test state */ struct subtest_state *subtest_state; /* current running subtest state */
- FILE *stdout; - FILE *stderr; + FILE *stdout_saved; + FILE *stderr_saved; int nr_cpus; FILE *json;