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// REQUIRES: not-msan
// MSan adds additional memory that overflows the counter
//
// Check that we properly kill states when we exceed our memory bounds, for both
// small and large allocations (large allocations commonly use mmap(), which can
// follow a separate path in the allocator and statistics reporting).
// RUN: %clang -emit-llvm -DLITTLE_ALLOC -g -c %s -o %t.little.bc
// RUN: rm -rf %t.klee-out
// RUN: %klee --output-dir=%t.klee-out --max-memory=20 %t.little.bc > %t.little.log
// RUN: FileCheck -check-prefix=CHECK-LITTLE -input-file=%t.little.log %s
// RUN: FileCheck -check-prefix=CHECK-WRN -input-file=%t.klee-out/warnings.txt %s
// RUN: %clang -emit-llvm -g -c %s -o %t.big.bc
// RUN: rm -rf %t.klee-out
// RUN: %klee --output-dir=%t.klee-out --max-memory=20 %t.big.bc > %t.big.log 2> %t.big.err
// RUN: FileCheck -check-prefix=CHECK-BIG -input-file=%t.big.log %s
// RUN: FileCheck -check-prefix=CHECK-WRN -input-file=%t.klee-out/warnings.txt %s
#include <stdio.h>
#include <stdlib.h>
int main() {
int i, j, x = 0, malloc_failed = 0;
#ifdef LITTLE_ALLOC
printf("IN LITTLE ALLOC\n");
// CHECK-LITTLE: IN LITTLE ALLOC
// 200 MB total (in 1 KB chunks)
for (i = 0; i < 100 && !malloc_failed; i++) {
for (j = 0; j < (1 << 11); j++) {
void *p = malloc(1 << 10);
malloc_failed |= (p == 0);
}
}
#else
printf("IN BIG ALLOC\n");
// CHECK-BIG: IN BIG ALLOC
// 200 MBs total
for (i = 0; i < 100 && !malloc_failed; i++) {
void *p = malloc(1 << 21);
malloc_failed |= (p == 0);
// Ensure we hit the periodic check
// Use the pointer to be not optimized out by the compiler
for (j = 0; j < 10000; j++)
x += (long)p;
}
#endif
// CHECK-WRN: WARNING: killing 1 states (over memory cap
if (malloc_failed)
printf("MALLOC FAILED\n");
// CHECK-LITTLE-NOT: MALLOC FAILED
// CHECK-BIG-NOT: MALLOC FAILED
printf("DONE!\n");
// CHECK-LITTLE-NOT: DONE!
// CHECK-BIG-NOT: DONE!
return x;
}
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