[llvm-bugs] [Bug 52364] New: code coverage ignores lines after assert(...)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=52364

            Bug ID: 52364
           Summary: code coverage ignores lines after assert(...)
           Product: clang
           Version: 13.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: mail at hanicka.net
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

Created attachment 25406
  --> https://bugs.llvm.org/attachment.cgi?id=25406&action=edit
minimal example

Hi I noticed an error in clang-13 code coverage reporting.

If you follow these steps:

```
clang test.c -fprofile-instr-generate -fcoverage-mapping -g -O0 -DDEBUG -o test

./test

llvm-profdata merge -sparse ./default.profraw -o ./test.profdata

llvm-cov show ./test -instr-profile=./test.profdata
```

The resulting coverage report is:
```
    1|       |#include <assert.h>
    2|       |#include <stdio.h>
    3|       |
    4|      1|int main() {
    5|      1|  assert(1);
    6|      0|  puts("not covered"); // line after assert is not covered
    7|      1|  puts("covered");
    8|      1|  assert(1);
    9|      0|  puts("not covered"); // line after assert is not covered
   10|      1|  assert(1);
   11|      0|  assert(1); // line after assert is not covered
   12|      0|  puts("not covered"); // line after assert is not covered
   13|      1|}
```

as you can see all lines after an `assert(...)` are ignored, this is a
regression as clang-12 doesn't have this behaviour

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