bf932867ac
The shell feature only implies that we are not running on Windows now that the internal shell is enabled by default everywhere. Remove where we can and rewrite to the more intentional UNSUPPORTED: system-windows when we still need to prevent tests from running on Windows.
101 lines
3.5 KiB
C++
101 lines
3.5 KiB
C++
// Test the behavior of malloc/calloc/realloc when the allocation causes OOM
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// in the secondary allocator.
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// By default (allocator_may_return_null=0) the process should crash.
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// With allocator_may_return_null=1 the allocator should return 0.
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// Set the limit to 20.5T on 64 bits to account for ASan shadow memory,
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// allocator buffers etc. so that the test allocation of ~1T will trigger OOM.
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// Limit this test to Linux since we're relying on allocator internal
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// limits (shadow memory size, allocation limits etc.)
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// TODO(boomanaiden154): Switch back to using env options instead of explicitly
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// exporting when the underlying bug causing ulimits to not apply to run lines
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// that use env options is fixed.
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// RUN: %clangxx_asan -O0 %s -o %t
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// RUN: ulimit -v 22024290304
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// RUN: not %run %t malloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-CRASH
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// RUN: %export_asan_opts=allocator_may_return_null=0
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// RUN: not %run %t malloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-CRASH
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// RUN: %export_asan_opts=allocator_may_return_null=1
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// RUN: %run %t malloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-NULL
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// RUN: %export_asan_opts=allocator_may_return_null=0
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// RUN: not %run %t calloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-CALLOC,CHECK-CRASH
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// RUN: %export_asan_opts=allocator_may_return_null=1
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// RUN: %run %t calloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-CALLOC,CHECK-NULL
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// RUN: %export_asan_opts=allocator_may_return_null=0
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// RUN: not %run %t realloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-REALLOC,CHECK-CRASH
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// RUN: %export_asan_opts=allocator_may_return_null=1
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// RUN: %run %t realloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-REALLOC,CHECK-NULL
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// RUN: %export_asan_opts=allocator_may_return_null=0
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// RUN: not %run %t realloc-after-malloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC-REALLOC,CHECK-CRASH
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// RUN: %export_asan_opts=allocator_may_return_null=1
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// RUN: %run %t realloc-after-malloc 2>&1 \
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// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC-REALLOC,CHECK-NULL
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// ASan shadow memory on s390 is too large for this test.
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// AArch64 bots fail on this test.
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// TODO(alekseys): Android lit do not run ulimit on device.
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// REQUIRES: shadow-scale-3
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// UNSUPPORTED: android, target={{(s390|aarch64|powerpc64le).*}}
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <assert.h>
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int main(int argc, char **argv) {
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assert(argc == 2);
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const char *action = argv[1];
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fprintf(stderr, "%s:\n", action);
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// Allocate just a bit less than max allocation size enforced by ASan's
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// allocator (currently 1T and 3G).
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const size_t size =
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#if __LP64__
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(1ULL << 40) - (1ULL << 30);
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#else
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(3ULL << 30) - (1ULL << 20);
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#endif
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void *x = 0;
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if (!strcmp(action, "malloc")) {
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x = malloc(size);
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} else if (!strcmp(action, "calloc")) {
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x = calloc(size / 4, 4);
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} else if (!strcmp(action, "realloc")) {
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x = realloc(0, size);
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} else if (!strcmp(action, "realloc-after-malloc")) {
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char *t = (char*)malloc(100);
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*t = 42;
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x = realloc(t, size);
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assert(*t == 42);
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free(t);
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} else {
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assert(0);
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}
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// The NULL pointer is printed differently on different systems, while (long)0
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// is always the same.
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fprintf(stderr, "x: %lx\n", (long)x);
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free(x);
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return x != 0;
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}
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// CHECK-MALLOC: malloc:
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// CHECK-CALLOC: calloc:
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// CHECK-REALLOC: realloc:
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// CHECK-MALLOC-REALLOC: realloc-after-malloc:
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// CHECK-CRASH: SUMMARY: AddressSanitizer: out-of-memory
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// CHECK-NULL: x: 0
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