| 1 | // RUN: %clangxx -fsanitize=realtime %s -o %t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 3 | // UNSUPPORTED: ios |
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| 4 | |
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| 5 | // Intent: Check that a function marked with [[clang::nonblocking]] cannot call a function that is blocking. |
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| 6 | |
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| 7 | #include <stdio.h> |
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| 8 | #include <stdlib.h> |
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| 9 | |
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| 10 | void custom_blocking_function() [[clang::blocking]] { |
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| 11 | printf(format: "In blocking function\n" ); |
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| 12 | } |
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| 13 | |
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| 14 | void realtime_function() [[clang::nonblocking]] { custom_blocking_function(); } |
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| 15 | void nonrealtime_function() { custom_blocking_function(); } |
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| 16 | |
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| 17 | int main() { |
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| 18 | nonrealtime_function(); |
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| 19 | realtime_function(); |
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| 20 | return 0; |
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| 21 | } |
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| 22 | |
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| 23 | // CHECK: ==ERROR: RealtimeSanitizer: blocking-call |
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| 24 | // CHECK-NEXT: Call to blocking function `custom_blocking_function()` in real-time context! |
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| 25 | // CHECK-NEXT: {{.*custom_blocking_function*}} |
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| 26 | // CHECK-NEXT: {{.*realtime_function*}} |
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| 27 | |
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| 28 | // should only occur once |
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| 29 | // CHECK-NOT: ==ERROR: RealtimeSanitizer: blocking-call |
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| 30 | |
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