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authorEric Andersen <andersen@codepoet.org>2003-09-01 20:42:39 +0000
committerEric Andersen <andersen@codepoet.org>2003-09-01 20:42:39 +0000
commit9efccabb26eed2b4b4ccb4a89561e1212b81d649 (patch)
tree8498d580186cad71e147c14a69a5728d9ddd8e2f /test/ldso/dltest.c
parentcea5b5c0657e999b561a6438c77861e00689b306 (diff)
A better test for a dlopen problem with weak symbols, based
on a much improve test by mjn3.
Diffstat (limited to 'test/ldso/dltest.c')
-rw-r--r--test/ldso/dltest.c42
1 files changed, 24 insertions, 18 deletions
diff --git a/test/ldso/dltest.c b/test/ldso/dltest.c
index 676e1ae55..244f3b76b 100644
--- a/test/ldso/dltest.c
+++ b/test/ldso/dltest.c
@@ -2,38 +2,44 @@
#include <stdlib.h>
#include <stdio.h>
#include <dlfcn.h>
-
-extern void _dlinfo();
-
-int main(int argc, char **argv) {
- void *handle;
- int (*myhowdy)(const char *s);
- char *error;
+#include <stdint.h>
#ifdef __UCLIBC__
- _dlinfo(); /* not supported by ld.so.2 */
+extern void _dlinfo(void);
#endif
- handle = dlopen ("./libhowdy.so", RTLD_LAZY);
+int main(int argc, char **argv)
+{
+ int ret = EXIT_SUCCESS;
+ void *handle;
+ void (*mydltest)(void *value1, void *value2);
+ char *error;
+ uint32_t *value1, *value2;
+ handle = dlopen (LIBNAME, RTLD_LAZY);
if (!handle) {
- fputs (dlerror(), stderr);
+ fprintf(stderr, "Could not open ./libtest.so: %s\n", dlerror());
exit(1);
}
- myhowdy = dlsym(handle, "howdy");
+ mydltest = dlsym(handle, "dltest");
if ((error = dlerror()) != NULL) {
- fputs(error, stderr);
+ fprintf(stderr, "Could not locate symbol 'dltest': %s\n", error);
exit(1);
}
- myhowdy("hello world!\n");
-
-#ifdef __UCLIBC__
- _dlinfo(); /* not supported by ld.so.2 */
-#endif
+ mydltest(&value1, &value2);
+ printf("dltest: __pthread_return_0=%p\n", value1);
+ printf("dltest: pthread_self=%p\n", value2);
+ if (value1 == value2) {
+ ret = EXIT_FAILURE;
+ printf("dltest: values should NOT be equal Weak values resolved incorrectly!\n");
+ } else {
+ printf("dltest: weak symbols resoved correctly.\n");
+ }
dlclose(handle);
- return EXIT_SUCCESS;
+ return ret;
}
+