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Disable warning from gcc -pedantic on dlsym/dlopen

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Signed-off-by: Gilles Peskine <[email protected]>
This commit is contained in:
Gilles Peskine
2025-04-25 18:49:56 +02:00
parent ebd0888cf0
commit 451b9ada27
1 changed files with 14 additions and 0 deletions
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programs/test/dlopen.c
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@@ -47,8 +47,15 @@ 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 */
@@ -75,8 +82,15 @@ int main(void)
#if defined(MBEDTLS_MD_C)
void *crypto_so = dlopen(CRYPTO_SO_FILENAME, RTLD_NOW);
CHECK_DLERROR("dlopen", CRYPTO_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 */