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Fix asan infinite loop on undefined symbol
Fix #39641 Differential Revision: https://reviews.llvm.org/D63877 llvm-svn: 366413
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Serge Guelton
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Jul 18, 2019
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compiler-rt/test/asan/TestCases/Linux/dlopen-mixed-c-cxx.c
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// RUN: %clangxx_asan -xc++ -shared -fPIC -o %t.so - < %s | ||
// RUN: %clang_asan %s -o %t.out -ldl | ||
// RUN: ASAN_OPTIONS=verbosity=1 not %t.out %t.so 2>&1 | FileCheck %s | ||
// | ||
// CHECK: AddressSanitizer: failed to intercept '__cxa_throw' | ||
// | ||
// dlopen() can not be intercepted on Android | ||
// UNSUPPORTED: android | ||
#ifdef __cplusplus | ||
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static void foo(void) { | ||
int i = 0; | ||
throw(i); | ||
} | ||
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extern "C" { | ||
int bar(void); | ||
}; | ||
int bar(void) { | ||
try { | ||
foo(); | ||
} catch (int i) { | ||
return i; | ||
} | ||
return -1; | ||
} | ||
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#else | ||
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#include <assert.h> | ||
#include <dlfcn.h> | ||
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int main(int argc, char **argv) { | ||
int (*bar)(void); | ||
void *handle = dlopen(argv[1], RTLD_LAZY); | ||
assert(handle); | ||
bar = dlsym(handle, "bar"); | ||
assert(bar); | ||
return bar(); | ||
} | ||
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#endif |