dacfa24f75
Now that we have the sanitizer metadata that is actually on the global variable, and now that we use debuginfo in order to do symbolization of globals, we can delete the 'llvm.asan.globals' IR synthesis. This patch deletes the 'location' part of the __asan_global that's embedded in the binary as well, because it's unnecessary. This saves about ~1.7% of the optimised non-debug with-asserts clang binary. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D127911
45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
// RUN: %clangxx_asan -g -O2 %s -o %t
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// RUN: not %run %t g 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=GLOB
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// RUN: not %run %t c 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CLASS_STATIC
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// RUN: not %run %t f 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=FUNC_STATIC
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// RUN: not %run %t l 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=LITERAL
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// COFF doesn't support debuginfo for globals. For the non-debuginfo tests, see global-location-nodebug.cpp.
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// XFAIL: windows-msvc
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// atos doesn't show source line numbers for global variables.
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// UNSUPPORTED: darwin
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// CHECK: AddressSanitizer: global-buffer-overflow
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#include <string.h>
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struct C {
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static int array[10];
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// CLASS_STATIC: 0x{{.*}} is located 4 bytes to the right of global variable 'C::array' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
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};
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int global[10];
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// GLOB: 0x{{.*}} is located 4 bytes to the right of global variable 'global' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
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int C::array[10];
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int main(int argc, char **argv) {
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int one = argc - 1;
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switch (argv[1][0]) {
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case 'g': return global[one * 11];
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case 'c': return C::array[one * 11];
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case 'f':
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static int array[10];
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// FUNC_STATIC: 0x{{.*}} is located 4 bytes to the right of global variable 'main::array' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
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memset(array, 0, 10);
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return array[one * 11];
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case 'l':
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const char *str = "0123456789";
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// LITERAL: 0x{{.*}} is located 0 bytes to the right of global variable {{.*}} defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 11
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return str[one * 11];
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}
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return 0;
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}
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// CHECK: SUMMARY: AddressSanitizer: global-buffer-overflow
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