53a81d4d26
This reapplies 8fa66c6ca7 ([asan][windows]
Eliminate the static asan runtime on windows) for a second time.
That PR bounced off the tests because it caused failures in the other
sanitizer runtimes, these have been fixed by only building interception,
sanitizer_common, and asan with /MD, and continuing to build the rest of
the runtimes with /MT. This does mean that any usage of the static
ubsan/fuzzer/etc runtimes will mean you're mixing different runtime
library linkages in the same app, the interception, sanitizer_common,
and asan runtimes are designed for this, however it does result in some
linker warnings.
Additionally, it turns out when building in release-mode with
LLVM_ENABLE_PDBs the build system forced /OPT:ICF. This totally breaks
asan's "new" method of doing "weak" functions on windows, and so
/OPT:NOICF was explicitly added to asan's link flags.
---------
Co-authored-by: Amy Wishnousky <amyw@microsoft.com>
38 lines
828 B
C++
38 lines
828 B
C++
// Check that free hook doesn't conflict with Realloc.
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// RUN: %clangxx_asan -O2 %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s
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// FIXME: merge this with the common free_hook_realloc test when we can run
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// common tests on Windows.
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#include <stdlib.h>
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#include <io.h>
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#include <sanitizer/allocator_interface.h>
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static void *glob_ptr;
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extern "C" {
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void __sanitizer_free_hook(const volatile void *ptr) {
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if (ptr == glob_ptr) {
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*(int*)ptr = 0;
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write(1, "FreeHook\n", sizeof("FreeHook\n"));
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}
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}
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}
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int main() {
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int *x = (int*)malloc(100);
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x[0] = 42;
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glob_ptr = x;
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int *y = (int*)realloc(x, 200);
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// Verify that free hook was called and didn't spoil the memory.
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if (y[0] != 42) {
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_exit(1);
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}
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write(1, "Passed\n", sizeof("Passed\n"));
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free(y);
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// CHECK: FreeHook
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// CHECK: Passed
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return 0;
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}
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