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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [LLVM-COV] No coverage with "Aborted(core dumped)""
href="https://bugs.llvm.org/show_bug.cgi?id=49420">49420</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[LLVM-COV] No coverage with "Aborted(core dumped)"
</td>
</tr>
<tr>
<th>Product</th>
<td>Runtime Libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>11.0
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>libprofile library
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cnwy1996@outlook.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>$ clang -v
clang version 11.0.0
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/wangyang/llvm-project/build/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.5.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
$ cat test.c
#include <x86intrin.h>
#include <stdio.h>
extern void abort(void);
#ifdef __x86_64__
#define EFLAGS_TYPE unsigned long long int
#else
#define EFLAGS_TYPE unsigned int
#endif
int main() {
printf("1\n");
EFLAGS_TYPE flags = 0xD7; /* 111010111b */
__writeeflags(flags);
flags = __readeflags();
printf("2\n");
if ((flags & 0xFF) != 0xD7)
abort();
printf("3\n");
#ifdef DEBUG
printf("PASSED\n");
#endif
}
$ clang -w -O0 -g -fcoverage-mapping -fprofile-instr-generate=test.profraw
test.c; ./a.out; llvm-profdata merge test.profraw -o test.profdata; llvm-cov
show a.out -instr-profile=test.profdata test.c > test.lcov; cat test.lcov
1
2
Aborted (core dumped)
1| |#include <x86intrin.h>
2| |#include <stdio.h>
3| |
4| |extern void abort(void);
5| |
6| |#ifdef __x86_64__
7| 0|#define EFLAGS_TYPE unsigned long long int
8| |#else
9| |#define EFLAGS_TYPE unsigned int
10| |#endif
11| |
12| 0|int main() {
13| 0| printf("1\n");
14| 0| EFLAGS_TYPE flags = 0xD7; /* 111010111b */
15| 0| __writeeflags(flags);
16| 0| flags = __readeflags();
17| 0| printf("2\n");
18| 0| if ((flags & 0xFF) != 0xD7)
19| 0| abort();
20| 0| printf("3\n");
21| |#ifdef DEBUG
22| | printf("PASSED\n");
23| |#endif
24| 0|}
We can see that line 13,14 are executed,which means that main function executed
too. However, no coverage generated.</pre>
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