tree 04b6e5357bce2383c02c219a96d60bb2360c6870
parent 94736e2eae1aad15a69868ccccd8c0acda270c58
author Nigel Tao <nigeltao@golang.org> 1644118039 +1100
committer Nigel Tao <nigeltao@golang.org> 1644118288 +1100

Fix test/c/testlib 'const char *' vs 'char *'

Prior to this commit, `g++ test/c/std/png.c` failed with:
test/c/std/../testlib/testlib.c:107:14: error: invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive]
...
test/c/std/../testlib/testlib.c:741:5: note: in expansion of macro ‘RETURN_FAIL’
  741 |     RETURN_FAIL("hex_dump: NULL argument");

Likewise, clang++ also failed with:
test/c/std/../testlib/testlib.c:741:5: error: cannot initialize return object of type 'char *' with an rvalue of type 'const char *'
    RETURN_FAIL("hex_dump: NULL argument");

Also run "clang-format-9 -style=Chromium"