af12729185
Summary: Currently many allocator specific errors (OOM, for example) are reported as a text message and CHECK(0) termination, not stack, no details, not too helpful nor informative. To improve the situation, detailed and structured errors were defined and reported under the appropriate conditions. Reviewers: eugenis Subscribers: kubamracek, delcypher, llvm-commits, #sanitizers Differential Revision: https://reviews.llvm.org/D47798 llvm-svn: 334248
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// RUN: %clangxx_hwasan -O0 %s -o %t
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t m1 2>&1 | FileCheck %s
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t m1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
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// RUN: %env_hwasan_opts=allocator_may_return_null=0 not %run %t psm1 2>&1 | FileCheck %s
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// RUN: %env_hwasan_opts=allocator_may_return_null=1 %run %t psm1 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
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// UNSUPPORTED: android
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// REQUIRES: stable-runtime
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// Checks that pvalloc overflows are caught. If the allocator is allowed to
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// return null, the errno should be set to ENOMEM.
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#include <assert.h>
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#include <errno.h>
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#include <malloc.h>
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#include <stdint.h>
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#include <string.h>
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#include <unistd.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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const size_t page_size = sysconf(_SC_PAGESIZE);
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void *p = nullptr;
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if (!strcmp(action, "m1")) {
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p = pvalloc((uintptr_t)-1);
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} else if (!strcmp(action, "psm1")) {
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p = pvalloc((uintptr_t)-(page_size - 1));
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} else {
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assert(0);
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}
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fprintf(stderr, "errno: %d\n", errno);
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return p != nullptr;
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}
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// CHECK: {{ERROR: HWAddressSanitizer: pvalloc parameters overflow: size .* rounded up to system page size .* cannot be represented in type size_t}}
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// CHECK: {{#0 0x.* in .*pvalloc}}
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// CHECK: {{#1 0x.* in main .*pvalloc-overflow.cc:}}
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// CHECK: SUMMARY: HWAddressSanitizer: pvalloc-overflow
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// CHECK-NULL: errno: 12
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