94394ca980
```
SanitizerCommon-ubsan-sparc-Linux :: Linux/signal_line.cpp
```
currently `FAIL`s on Linux/sparc64 (32 and 64-bit) for `n == 2`. Instead
of the expected `SIGSEGV`, the test dies with `SIGBUS`. `strace` reveals
that this is due to a unaligned access:
```
--- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRALN, si_addr=0x1} ---
```
which is to be expected on a strict-alignment target like SPARC. Fixed
by changing the invalid pointer to be better aligned.
Tested on `sparc64-unknown-linux-gnu` and `x86_64-pc-linux-gnu`.
28 lines
1.1 KiB
C++
28 lines
1.1 KiB
C++
// Test line numbers in signal handlers
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// Fails with debug checks: https://bugs.llvm.org/show_bug.cgi?id=46860
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// XFAIL: !compiler-rt-optimized && tsan
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// RUN: %clangxx %s -o %t -O0
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// RUN: %env_tool_opts=handle_segv=1:print_stacktrace=1 not %run %t 1 2>&1 | FileCheck --check-prefixes=CHECK1,CHECK %s
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// RUN: %env_tool_opts=handle_segv=1:print_stacktrace=1 not %run %t 2 2>&1 | FileCheck --check-prefixes=CHECK2,CHECK %s
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#include <cstdio>
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#include <string>
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// CHECK: [[SAN:.*Sanitizer]]:DEADLYSIGNAL
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// CHECK: ERROR: [[SAN]]: SEGV on unknown address {{0x[^ ]*}} (pc
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int main(int argc, char **argv) {
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int n = atoi(argv[1]);
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if (n == 1)
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*((volatile int *)0x0) = __LINE__;
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// CHECK1: #{{[0-9]+ .*}}main {{.*}}signal_line.cpp:[[@LINE-1]]:[[TAB:[0-9]+]]
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// CHECK1: SUMMARY: [[SAN]]: SEGV {{.*}}signal_line.cpp:[[@LINE-2]]:[[TAB]] in main
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if (n == 2)
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// Allow for strict-alignment targets that require natural alignment.
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*((volatile int *)0x8) = __LINE__;
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// CHECK2: #{{[0-9]+ .*}}main {{.*}}signal_line.cpp:[[@LINE-1]]:[[TAB:[0-9]+]]
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// CHECK2: SUMMARY: [[SAN]]: SEGV {{.*}}signal_line.cpp:[[@LINE-2]]:[[TAB]] in main
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}
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