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Disable warning from gcc -pedantic on dlsym/dlopen

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2025-01-08 17:26:01 +01:00
parent 2439c4c14a
commit 06af417cea
1 changed files with 14 additions and 1 deletions
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15
programs/test/dlopen.c
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@ -50,8 +50,15 @@ int main(void)
#if defined(MBEDTLS_SSL_TLS_C)
void *tls_so = dlopen(TLS_SO_FILENAME, RTLD_NOW);
CHECK_DLERROR("dlopen", TLS_SO_FILENAME);
#pragma GCC diagnostic push
/* dlsym() returns an object pointer which is meant to be used as a
* function pointer. This has undefined behavior in standard C, so
* "gcc -std=c99 -pedantic" complains about it, but it is perfectly
* fine on platforms that have dlsym(). */
#pragma GCC diagnostic ignored "-Wpedantic"
const int *(*ssl_list_ciphersuites)(void) =
dlsym(tls_so, "mbedtls_ssl_list_ciphersuites");
#pragma GCC diagnostic pop
CHECK_DLERROR("dlsym", "mbedtls_ssl_list_ciphersuites");
const int *ciphersuites = ssl_list_ciphersuites();
for (n = 0; ciphersuites[n] != 0; n++) {/* nothing to do, we're just counting */
@ -85,9 +92,15 @@ int main(void)
CHECK_DLERROR("dlopen", TFPSACRYPTO_SO_FILENAME);
crypto_so_filename = TFPSACRYPTO_SO_FILENAME;
}
#pragma GCC diagnostic push
/* dlsym() returns an object pointer which is meant to be used as a
* function pointer. This has undefined behavior in standard C, so
* "gcc -std=c99 -pedantic" complains about it, but it is perfectly
* fine on platforms that have dlsym(). */
#pragma GCC diagnostic ignored "-Wpedantic"
const int *(*md_list)(void) =
dlsym(crypto_so, "mbedtls_md_list");
#pragma GCC diagnostic pop
CHECK_DLERROR("dlsym", "mbedtls_md_list");
const int *mds = md_list();
for (n = 0; mds[n] != 0; n++) {/* nothing to do, we're just counting */