d74d04a6c5
Summary: This allows to build and link the code with e.g. -fsanitize=dataflow -fsanitize-coverage=trace-pc-guard,pc-table,func,trace-cmp w/o providing (all) the definitions of trace-cmp hooks. This is similar to dummy hooks provided by asan/ubsan/msan for the same purpose, except that some of the hooks need to have the __dfsw_ prefix since we need dfsan to replace them. Reviewers: pcc Reviewed By: pcc Subscribers: delcypher, #sanitizers, llvm-commits Differential Revision: https://reviews.llvm.org/D47605 llvm-svn: 333796
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
// Checks that dfsan works with trace-cmp instrumentation, even if some hooks
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// are not defined (relies on week hooks implemented in dfsan).
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//
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// RUN: %clang_dfsan -fsanitize-coverage=trace-pc-guard,pc-table,func,trace-cmp %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <sanitizer/dfsan_interface.h>
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uint32_t a4, b4;
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uint64_t a8, b8;
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// Define just two hooks, and leave others undefined.
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void __dfsw___sanitizer_cov_trace_const_cmp4(uint8_t a, uint8_t b,
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dfsan_label l1, dfsan_label l2) {
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printf("const_cmp4 %d %d\n", a, b);
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}
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void __dfsw___sanitizer_cov_trace_cmp8(uint8_t a, uint8_t b, dfsan_label l1,
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dfsan_label l2) {
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printf("cmp8 %d %d\n", a, b);
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}
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int main(int argc, char **argv) {
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printf("MAIN\n");
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// CHECK: MAIN
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if (a4 != b4) abort();
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if (a4 == 42) abort();
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// CHECK: const_cmp4 42 0
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if (a8 != b8) abort();
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// CHECK: cmp8 0 0
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if (a8 == 66) abort();
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switch (10 / (a4 + 2)) {
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case 1: abort();
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case 2: exit(1);
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case 5:
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printf("SWITCH OK\n");
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break;
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}
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// CHECK: SWITCH OK
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printf("DONE\n");
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// CHECK: DONE
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return 0;
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}
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