unused-value warnings with gcc 10.2.0 #210
Description
I'm getting the following warnings when compiling libyaml with gcc 10.2.0:
../../src/compiler/third_party/libyaml/src/emitter.c: In function ‘yaml_emitter_write_plain_scalar’:
../../src/compiler/third_party/libyaml/src/emitter.c:28:6: error: value computed is not used [-Werror=unused-value]
28 | && ((emitter->line_break == YAML_CR_BREAK ? \
| ^~
../../src/compiler/third_party/libyaml/src/emitter.c:56:11: note: in expansion of macro ‘PUT_BREAK’
56 | (PUT_BREAK(emitter), \
| ^~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c:1962:18: note: in expansion of macro ‘WRITE_BREAK’
1962 | if (!WRITE_BREAK(emitter, string)) return 0;
| ^~~~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c: In function ‘yaml_emitter_write_single_quoted_scalar’:
../../src/compiler/third_party/libyaml/src/emitter.c:28:6: error: value computed is not used [-Werror=unused-value]
28 | && ((emitter->line_break == YAML_CR_BREAK ? \
| ^~
../../src/compiler/third_party/libyaml/src/emitter.c:56:11: note: in expansion of macro ‘PUT_BREAK’
56 | (PUT_BREAK(emitter), \
| ^~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c:2019:18: note: in expansion of macro ‘WRITE_BREAK’
2019 | if (!WRITE_BREAK(emitter, string)) return 0;
| ^~~~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c: In function ‘yaml_emitter_write_literal_scalar’:
../../src/compiler/third_party/libyaml/src/emitter.c:28:6: error: value computed is not used [-Werror=unused-value]
28 | && ((emitter->line_break == YAML_CR_BREAK ? \
| ^~
../../src/compiler/third_party/libyaml/src/emitter.c:56:11: note: in expansion of macro ‘PUT_BREAK’
56 | (PUT_BREAK(emitter), \
| ^~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c:2285:18: note: in expansion of macro ‘WRITE_BREAK’
2285 | if (!WRITE_BREAK(emitter, string)) return 0;
| ^~~~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c: In function ‘yaml_emitter_write_folded_scalar’:
../../src/compiler/third_party/libyaml/src/emitter.c:28:6: error: value computed is not used [-Werror=unused-value]
28 | && ((emitter->line_break == YAML_CR_BREAK ? \
| ^~
../../src/compiler/third_party/libyaml/src/emitter.c:56:11: note: in expansion of macro ‘PUT_BREAK’
56 | (PUT_BREAK(emitter), \
| ^~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c:2334:18: note: in expansion of macro ‘WRITE_BREAK’
2334 | if (!WRITE_BREAK(emitter, string)) return 0;
| ^~~~~~~~~~~
../../src/compiler/third_party/libyaml/src/emitter.c: At top level:
Probably enough to put a (void) into the right places, but I haven't really investigated.