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      1 // Print matched suppressions only if print_suppressions=1 AND at least one is
      2 // matched. Default is print_suppressions=true.
      3 // RUN: LSAN_BASE="use_registers=0:use_stacks=0"
      4 // RUN: %clangxx_lsan %s -o %t
      5 // RUN: LSAN_OPTIONS=$LSAN_BASE:print_suppressions=0 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-dont-print
      6 // RUN: LSAN_OPTIONS=$LSAN_BASE %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-dont-print
      7 // RUN: LSAN_OPTIONS=$LSAN_BASE:print_suppressions=0 %run %t foo 2>&1 | FileCheck %s --check-prefix=CHECK-dont-print
      8 // RUN: LSAN_OPTIONS=$LSAN_BASE %run %t foo 2>&1 | FileCheck %s --check-prefix=CHECK-print
      9 
     10 #include <stdio.h>
     11 #include <stdlib.h>
     12 
     13 #include "sanitizer/lsan_interface.h"
     14 
     15 extern "C"
     16 const char *__lsan_default_suppressions() {
     17   return "leak:*LSanTestLeakingFunc*";
     18 }
     19 
     20 void LSanTestLeakingFunc() {
     21   void *p = malloc(666);
     22   fprintf(stderr, "Test alloc: %p.\n", p);
     23 }
     24 
     25 int main(int argc, char **argv) {
     26   printf("print for nonempty output\n");
     27   if (argc > 1)
     28     LSanTestLeakingFunc();
     29   return 0;
     30 }
     31 // CHECK-print: Suppressions used:
     32 // CHECK-print: 1 666 *LSanTestLeakingFunc*
     33 // CHECK-dont-print-NOT: Suppressions used:
     34