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tsan: fix signal_longjmp test in debug mode 

In debug mode tsan checks that user accesses
access user memory. NULL is not user memory.
So the test fails. Allocate real inaccessible
memory for the test.

llvm-svn: 218069
This commit is contained in:
Dmitry Vyukov 2014-09-18 19:00:02 +00:00
parent dfd8c74a98
commit c0ae07e98c
1 changed files with 9 additions and 3 deletions
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12
compiler-rt/test/tsan/signal_longjmp.cc
View File

@ -7,6 +7,7 @@
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/mman.h>
sigjmp_buf fault_jmp;
volatile int fault_expected;
@ -45,9 +46,12 @@ int main() {
exit(1);
}
MUST_FAULT(((volatile int *volatile)0)[0] = 0);
MUST_FAULT(((volatile int *volatile)0)[1] = 1);
MUST_FAULT(((volatile int *volatile)0)[3] = 1);
void *mem = mmap(0, 4096, PROT_NONE, MAP_PRIVATE | MAP_ANON,
-1, 0);
MUST_FAULT(((volatile int *volatile)mem)[0] = 0);
MUST_FAULT(((volatile int *volatile)mem)[1] = 1);
MUST_FAULT(((volatile int *volatile)mem)[3] = 1);
// Ensure that tsan does not think that we are
// in a signal handler.
@ -55,6 +59,8 @@ int main() {
((volatile int*)p)[1] = 1;
free((void*)p);
munmap(p, 4096);
fprintf(stderr, "DONE\n");
return 0;
}