101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
// Test for ASAN_OPTIONS=start_deactivated=1 mode.
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// Main executable is uninstrumented, but linked to ASan runtime. The shared
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// library is instrumented. Memory errors before dlopen are not detected.
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// RUN: %clangxx_asan -O0 -DSHARED_LIB %s -fPIC -shared -o %t-so.so
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// RUN: %clangxx -O0 %s -c -o %t.o
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// RUN: %clangxx_asan -O0 %t.o %libdl -o %t
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// RUN: %env_asan_opts=start_deactivated=1,allocator_may_return_null=0 \
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// RUN: ASAN_ACTIVATION_OPTIONS=allocator_may_return_null=1 not %run %t 2>&1 | FileCheck %s
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// RUN: %env_asan_opts=start_deactivated=1 \
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// RUN: ASAN_ACTIVATION_OPTIONS=help=1 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-HELP
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// RUN: %env_asan_opts=start_deactivated=1,verbosity=1 \
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// RUN: ASAN_ACTIVATION_OPTIONS=help=1,handle_segv=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UNSUPPORTED
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// RUN: %env_asan_opts=start_deactivated=1 \
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// RUN: ASAN_ACTIVATION_OPTIONS=help=1,handle_segv=0 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UNSUPPORTED-V0
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// Check that verbosity=1 in activation flags affects reporting of unrecognized activation flags.
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// RUN: %env_asan_opts=start_deactivated=1 \
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// RUN: ASAN_ACTIVATION_OPTIONS=help=1,handle_segv=0,verbosity=1 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-UNSUPPORTED
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// XFAIL: arm-linux-gnueabi
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#if !defined(SHARED_LIB)
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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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#include <string.h>
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#include <unistd.h>
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#include <string>
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#include "sanitizer/asan_interface.h"
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void test_malloc_shadow() {
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char *p = (char *)malloc(100);
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char *q = (char *)__asan_region_is_poisoned(p + 95, 8);
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fprintf(stderr, "=%zd=\n", q ? q - (p + 95) : -1);
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free(p);
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}
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typedef void (*Fn)();
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int main(int argc, char *argv[]) {
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test_malloc_shadow();
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// CHECK: =-1=
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std::string path = std::string(argv[0]) + "-so.so";
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void *dso = dlopen(path.c_str(), RTLD_NOW);
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if (!dso) {
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fprintf(stderr, "dlopen failed: %s\n", dlerror());
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return 1;
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}
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test_malloc_shadow();
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// CHECK: =5=
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// After this line ASan is activated and starts detecting errors.
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void *fn = dlsym(dso, "do_another_bad_thing");
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if (!fn) {
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fprintf(stderr, "dlsym failed: %s\n", dlerror());
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return 1;
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}
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// Test that ASAN_ACTIVATION_OPTIONS=allocator_may_return_null=1 has effect.
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void *p = malloc((unsigned long)-2);
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assert(!p);
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// CHECK: WARNING: AddressSanitizer failed to allocate 0xfff{{.*}} bytes
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((Fn)fn)();
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// CHECK: AddressSanitizer: heap-buffer-overflow
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// CHECK: READ of size 1
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// CHECK: {{#0 .* in do_another_bad_thing}}
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// CHECK: is located 5 bytes to the right of 100-byte region
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// CHECK: in do_another_bad_thing
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return 0;
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}
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#else // SHARED_LIB
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#include <stdio.h>
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#include <stdlib.h>
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extern "C" void do_another_bad_thing() {
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char *volatile p = (char *)malloc(100);
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printf("%hhx\n", p[105]);
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}
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#endif // SHARED_LIB
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// help=1 in activation flags lists only flags are are supported at activation
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// CHECK-HELP: Available flags for {{.*}}Sanitizer:
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// CHECK-HELP-NOT: handle_segv
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// CHECK-HELP: max_redzone
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// CHECK-HELP-NOT: handle_segv
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// unsupported activation flags produce a warning ...
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// CHECK-UNSUPPORTED: WARNING: found 1 unrecognized
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// CHECK-UNSUPPORTED: handle_segv
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// ... but not at verbosity=0
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// CHECK-UNSUPPORTED-V0-NOT: WARNING: found {{.*}} unrecognized
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