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