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authorMike Frysinger <vapier@gentoo.org>2007-03-12 19:22:52 +0000
committerMike Frysinger <vapier@gentoo.org>2007-03-12 19:22:52 +0000
commit458e37f68e1836e456e1b6a4e383f53476a0c2f1 (patch)
tree2821cff4bd6be7eb1a3d3ac029d885004fec7b15
parent3c744cd1780793df6193f3b83630702b35ab1e02 (diff)
make sure dlsym() properly returns NULL with undefined symbols
-rw-r--r--test/dlopen/Makefile4
-rw-r--r--test/dlopen/dlundef.c29
-rw-r--r--test/dlopen/libundef.c15
3 files changed, 47 insertions, 1 deletions
diff --git a/test/dlopen/Makefile b/test/dlopen/Makefile
index defe764ed..db989b2a9 100644
--- a/test/dlopen/Makefile
+++ b/test/dlopen/Makefile
@@ -4,7 +4,7 @@
# rules need a little love to work with glibc ...
export UCLIBC_ONLY := 1
-TESTS := dltest dltest2 dlstatic test1 test2 test3
+TESTS := dltest dltest2 dlstatic test1 test2 test3 dlundef
include ../Test.mak
@@ -14,6 +14,7 @@ CFLAGS_dltest2 := -DLIBNAME="\"./libtest3.so\""
LDFLAGS_dlstatic := -ldl
LDFLAGS_dltest := -ldl -lpthread
LDFLAGS_dltest2 := -ldl -lpthread
+LDFLAGS_dlundef := -ldl
LDFLAGS_test1 := -ldl
LDFLAGS_test2 := -ldl
LDFLAGS_test3 := -ldl ./libtest1.so ./libtest2.so -Wl,-rpath,.
@@ -24,6 +25,7 @@ WRAPPER := env $(DEBUG_LIBS)=all LD_LIBRARY_PATH="$$PWD:.:$(LD_LIBRARY_PATH)"
dltest: libtest.so
dltest2: libtest3.so
dlstatic: libstatic.so
+dlundef: libundef.so
test1: libtest1.so
test2: libtest1.so libtest2.so
test3: libtest1.so libtest2.so
diff --git a/test/dlopen/dlundef.c b/test/dlopen/dlundef.c
new file mode 100644
index 000000000..cefd93318
--- /dev/null
+++ b/test/dlopen/dlundef.c
@@ -0,0 +1,29 @@
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <dlfcn.h>
+#include <stdint.h>
+
+#define LIBNAME "libundef.so"
+
+int main(int argc, char **argv)
+{
+ void *handle;
+ int (*myundefined)(void);
+
+ handle = dlopen(LIBNAME, RTLD_LAZY);
+ if (!handle) {
+ fprintf(stderr, "Could not open ./%s: %s\n", LIBNAME, dlerror());
+ return EXIT_FAILURE;
+ }
+
+ myundefined = dlsym(handle, "__booga_booga_you_cant_touch_this__");
+ if (myundefined != NULL) {
+ fprintf(stderr, "dlsym() found a symbol that does not exist!\n");
+ return EXIT_FAILURE;
+ }
+
+ dlclose(handle);
+
+ return EXIT_SUCCESS;
+}
diff --git a/test/dlopen/libundef.c b/test/dlopen/libundef.c
new file mode 100644
index 000000000..bf44c3c68
--- /dev/null
+++ b/test/dlopen/libundef.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+static int global_static = -1;
+
+int static_test(void)
+{
+ static int local_static = -2;
+
+ if (global_static != -1)
+ printf("FAIL: global_static is not -1\n");
+ if (local_static != -2)
+ printf("FAIL: local_static is not -2\n");
+
+ return (global_static == -1 && local_static == -2);
+}