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-rw-r--r--test/asan/TestCases/Posix/global-registration.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/test/asan/TestCases/Posix/global-registration.c b/test/asan/TestCases/Posix/global-registration.c
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+++ b/test/asan/TestCases/Posix/global-registration.c
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+// Test that globals from different shared objects all get registered.
+
+// This source file is compiled into three different source object files. Each
+// object file declares a global buffer. The first two are linked together, and
+// the third is loaded at runtime. We make sure that out-of-bounds accesses
+// are caught for all three buffers.
+
+// RUN: %clang_asan -c -o %t-one.o -DMAIN_FILE %s
+// RUN: %clang_asan -c -o %t-two.o -DSECONDARY_FILE %s
+// RUN: %clang_asan -o %t %t-one.o %t-two.o %libdl
+// RUN: %clang_asan -o %t-dynamic.so -shared -fPIC -DSHARED_LIBRARY_FILE %s
+// RUN: not %run %t 1 2>&1 | FileCheck --check-prefix ASAN-CHECK-1 %s
+// RUN: not %run %t 2 2>&1 | FileCheck --check-prefix ASAN-CHECK-2 %s
+// RUN: not %run %t 3 2>&1 | FileCheck --check-prefix ASAN-CHECK-3 %s
+
+#if MAIN_FILE
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+extern char buffer1[1];
+extern char buffer2[1];
+char buffer1[1] = { 0 };
+
+int main(int argc, char *argv[]) {
+ int n = atoi(argv[1]);
+ if (n == 1) {
+ buffer1[argc] = 0;
+ // ASAN-CHECK-1: {{0x.* is located 1 bytes .* 'buffer1'}}
+ } else if (n == 2) {
+ buffer2[argc] = 0;
+ // ASAN-CHECK-2: {{0x.* is located 1 bytes .* 'buffer2'}}
+ } else if (n == 3) {
+ char *libsuffix = "-dynamic.so";
+ char *libpath = malloc(strlen(argv[0]) + strlen(libsuffix) + 1);
+ sprintf(libpath, "%s%s", argv[0], libsuffix);
+
+ void *handle = dlopen(libpath, RTLD_NOW);
+ if (!handle) {
+ fprintf(stderr, "dlopen: %s\n", dlerror());
+ return 1;
+ }
+
+ char *buffer = (char *)dlsym(handle, "buffer3");
+ if (!buffer) {
+ fprintf(stderr, "dlsym: %s\n", dlerror());
+ return 1;
+ }
+
+ buffer[argc] = 0;
+ // ASAN-CHECK-3: {{0x.* is located 1 bytes .* 'buffer3'}}
+ }
+
+ return 0;
+}
+
+#elif SECONDARY_FILE
+
+extern char buffer2[1];
+char buffer2[1] = { 0 };
+
+#elif SHARED_LIBRARY_FILE
+
+extern char buffer3[1];
+char buffer3[1] = { 0 };
+
+#endif