llvm-project/openmp/runtime/test/env/check_certain_values.c
Jonathan Peyton 4981bc24cf
[OpenMP] Fixup bugs found during fuzz testing (#143455)
A lot of these only trip when using sanitizers with the library.

* Insert forgotten free()s
* Change (-1) << amount to 0xffffffffu as left shifting a negative is UB
* Fixup integer parser to return INT_MAX when parsing huge string of
digits. e.g., 452523423423423423 returns INT_MAX
* Fixup range parsing for affinity mask so integer overflow does not
occur
* Don't assert when branch bits are 0, instead warn user that is invalid
and use the default value.
* Fixup kmp_set_defaults() so the C version only uses null terminated
strings and the Fortran version uses the string + size version.
* Make sure the KMP_ALIGN_ALLOC is power of two, otherwise use
CACHE_LINE.
* Disallow ability to set KMP_TASKING=1 (task barrier) this doesn't work
and hasn't worked for a long time.
* Limit KMP_HOT_TEAMS_MAX_LEVEL to 1024, an array is allocated based on
this value.
* Remove integer values for OMP_PROC_BIND. The specification only allows
strings and CSV of strings.
* Fix setting KMP_AFFINITY=disabled + OMP_DISPLAY_AFFINITY=TRUE
2025-07-21 17:49:45 -04:00

36 lines
910 B
C

// RUN: %libomp-compile
// RUN: env KMP_FORKJOIN_BARRIER=0,0 %libomp-run
// RUN: env KMP_PLAIN_BARRIER=0,0 %libomp-run
// RUN: env KMP_REDUCTION_BARRIER=0,0 %libomp-run
// RUN: env KMP_ALIGN_ALLOC=7 %libomp-run
// RUN: env KMP_ALIGN_ALLOC=8 %libomp-run
// RUN: env KMP_AFFINITY='explicit,proclist=[0-1222333333333444444]' %libomp-run
// RUN: env KMP_AFFINITY=disabled OMP_DISPLAY_AFFINITY=TRUE %libomp-run
//
// Test that certain environment variable values do not crash the runtime.
#include <omp.h>
#include <stdlib.h>
int a = 0;
int test() {
#pragma omp parallel reduction(+ : a)
{
a += omp_get_thread_num();
}
if (a == 0) {
// If the test passes, 'a' should not be zero
// because we are using reduction on thread numbers.
return 0;
}
return 1;
}
int main(int argc, char **argv) {
int status = EXIT_SUCCESS;
if (!test()) {
status = EXIT_FAILURE;
}
return status;
}