5b4dda550e
Complete support for fast8: - amend shadow size and mapping in runtime - remove fast16 mode and -dfsan-fast-16-labels flag - remove legacy mode and make fast8 mode the default - remove dfsan-fast-8-labels flag - remove functions in dfsan interface only applicable to legacy - remove legacy-related instrumentation code and tests - update documentation. Reviewed By: stephan.yichao.zhao, browneee Differential Revision: https://reviews.llvm.org/D103745
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
// RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t
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//
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// RUN: %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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//
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// RUN: DFSAN_OPTIONS=origin_history_size=2 %run %t >%t.out 2>&1
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// RUN: FileCheck %s --check-prefix=CHECK2 < %t.out
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//
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// RUN: DFSAN_OPTIONS=origin_history_size=0 %run %t >%t.out 2>&1
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// RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
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//
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// REQUIRES: x86_64-target-arch
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#include <sanitizer/dfsan_interface.h>
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#include <stdio.h>
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__attribute__((noinline)) int foo(int a, int b) { return a + b; }
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int main(int argc, char *argv[]) {
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int a = 10;
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dfsan_set_label(8, &a, sizeof(a));
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int c = 0;
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for (int i = 0; i < 17; ++i) {
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c = foo(a, c);
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printf("%lx", (unsigned long)&c);
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}
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dfsan_print_origin_trace(&c, NULL);
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}
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// CHECK: Taint value 0x8 {{.*}} origin tracking ()
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// CHECK-COUNT 14: Origin value: {{.*}}, Taint value was stored to memory at
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// CHECK: Origin value: {{.*}}, Taint value was created at
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// CHECK2: Taint value 0x8 {{.*}} origin tracking ()
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// CHECK2: Origin value: {{.*}}, Taint value was stored to memory at
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// CHECK2: Origin value: {{.*}}, Taint value was created at
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// CHECK0: Taint value 0x8 {{.*}} origin tracking ()
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// CHECK0-COUNT 16: Origin value: {{.*}}, Taint value was stored to memory at
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// CHECK0: Origin value: {{.*}}, Taint value was created at
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