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[DFSan] Print more debugging info on test failure.

This commit is contained in:
Matt Morehouse 2020-07-23 15:46:44 +00:00
parent 5477fbc294
commit 84980b1395
1 changed files with 10 additions and 3 deletions
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13
compiler-rt/test/dfsan/fast16labels.c
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@ -24,6 +24,7 @@ int foo(int a, int b) {
int main(int argc, char *argv[]) {
// Death tests for unsupported API usage.
const char *command = (argc < 2) ? "" : argv[1];
fprintf(stderr, "Running with command %s\n", command);
// CREATE-LABEL: FATAL: DataFlowSanitizer: dfsan_create_label is unsupported
if (strcmp(command, "dfsan_create_label") == 0)
dfsan_create_label("", NULL);
@ -41,12 +42,18 @@ int main(int argc, char *argv[]) {
dfsan_set_label(8, &a, sizeof(a));
dfsan_set_label(512, &b, sizeof(b));
int c = foo(a, b);
printf("A: 0x%x\n", dfsan_get_label(a));
printf("B: 0x%x\n", dfsan_get_label(b));
fprintf(stderr, "A: 0x%x\n", dfsan_get_label(a));
fprintf(stderr, "B: 0x%x\n", dfsan_get_label(b));
dfsan_label l = dfsan_get_label(c);
printf("C: 0x%x\n", l);
fprintf(stderr, "C: 0x%x\n", l);
fprintf(stderr, "Testing l == 520\n");
assert(l == 520); // OR of the other two labels.
fprintf(stderr, "Testing dfsan_has_label(l, 8)\n");
assert(dfsan_has_label(l, 8));
fprintf(stderr, "Testing dfsan_has_label(l, 512)\n");
assert(dfsan_has_label(l, 512));
fprintf(stderr, "Testing !dfsan_has_label(l, 1)\n");
assert(!dfsan_has_label(l, 1));
fprintf(stderr, "returning...\n");
return 0;
}