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42 lines
950 B
42 lines
950 B
4 months ago
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// Check that --gc-sections does not throw away (or localize) parts of sanitizer
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// interface.
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// RUN: %clang_asan %s -Wl,--gc-sections -ldl -o %t
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// RUN: %clang_asan %s -DBUILD_SO -fPIC -o %t-so.so -shared
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// RUN: %run %t 2>&1
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// REQUIRES: asan-64-bits
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#ifndef BUILD_SO
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#include <assert.h>
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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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int main(int argc, char *argv[]) {
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char path[4096];
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snprintf(path, sizeof(path), "%s-so.so", argv[0]);
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void *handle = dlopen(path, RTLD_LAZY);
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if (!handle) fprintf(stderr, "%s\n", dlerror());
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assert(handle != 0);
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typedef void (*F)();
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F f = (F)dlsym(handle, "call_rtl_from_dso");
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printf("%s\n", dlerror());
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assert(dlerror() == 0);
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f();
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dlclose(handle);
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return 0;
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}
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#else // BUILD_SO
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#include <sanitizer/asan_interface.h>
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extern "C" void call_rtl_from_dso() {
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volatile int32_t x;
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volatile int32_t y = __sanitizer_unaligned_load32((void *)&x);
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}
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#endif // BUILD_SO
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