diff options
Diffstat (limited to 'lib/lsan/lit_tests/TestCases/swapcontext.cc')
-rw-r--r-- | lib/lsan/lit_tests/TestCases/swapcontext.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/lib/lsan/lit_tests/TestCases/swapcontext.cc b/lib/lsan/lit_tests/TestCases/swapcontext.cc new file mode 100644 index 000000000000..a06685ca2f03 --- /dev/null +++ b/lib/lsan/lit_tests/TestCases/swapcontext.cc @@ -0,0 +1,42 @@ +// We can't unwind stack if we're running coroutines on heap-allocated +// memory. Make sure we don't report these leaks. + +// RUN: %clangxx_lsan %s -o %t +// RUN: %t 2>&1 +// RUN: not %t foo 2>&1 | FileCheck %s + +#include <stdio.h> +#include <ucontext.h> +#include <unistd.h> + +const int kStackSize = 1 << 20; + +void Child() { + int child_stack; + printf("Child: %p\n", &child_stack); + int *leaked = new int[666]; +} + +int main(int argc, char *argv[]) { + char stack_memory[kStackSize + 1]; + char *heap_memory = new char[kStackSize + 1]; + char *child_stack = (argc > 1) ? stack_memory : heap_memory; + + printf("Child stack: %p\n", child_stack); + ucontext_t orig_context; + ucontext_t child_context; + getcontext(&child_context); + child_context.uc_stack.ss_sp = child_stack; + child_context.uc_stack.ss_size = kStackSize / 2; + child_context.uc_link = &orig_context; + makecontext(&child_context, Child, 0); + if (swapcontext(&orig_context, &child_context) < 0) { + perror("swapcontext"); + return 1; + } + + delete[] heap_memory; + return 0; +} + +// CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: 2664 byte(s) leaked in 1 allocation(s) |