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* [Bug driver/99608] New: gcc doesn't print diagnostics carets when file is passed through stdin @ 2021-03-15 21:36 freezer at posteo dot de 2021-03-15 21:47 ` [Bug middle-end/99608] " pinskia at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: freezer at posteo dot de @ 2021-03-15 21:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99608 Bug ID: 99608 Summary: gcc doesn't print diagnostics carets when file is passed through stdin Product: gcc Version: 10.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: driver Assignee: unassigned at gcc dot gnu.org Reporter: freezer at posteo dot de Target Milestone: --- When a file is passed to gcc through stdin, gcc won't print any diagnostics carets for the passed file. Example: // test.c int main(int argc, char **argv) { return 0; } When test.c is passed to gcc through stdin, the following is printed: $ cat test.c | gcc -Wall -Wextra -xc - <stdin>: In function ‘main’: <stdin>:1:14: warning: unused parameter ‘argc’ [-Wunused-parameter] <stdin>:1:27: warning: unused parameter ‘argv’ [-Wunused-parameter] (Note that forcing the -fdiagnostics-show-caret option doesn't change anything) I would have expected the same output as when the file is passed to gcc as an argument: $ gcc -Wall -Wextra test.c test.c: In function ‘main’: test.c:1:14: warning: unused parameter ‘argc’ [-Wunused-parameter] 1 | int main(int argc, char **argv) | ~~~~^~~~ test.c:1:27: warning: unused parameter ‘argv’ [-Wunused-parameter] 1 | int main(int argc, char **argv) | ~~~~~~~^~~~ ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/99608] gcc doesn't print diagnostics carets when file is passed through stdin 2021-03-15 21:36 [Bug driver/99608] New: gcc doesn't print diagnostics carets when file is passed through stdin freezer at posteo dot de @ 2021-03-15 21:47 ` pinskia at gcc dot gnu.org 2021-03-15 22:13 ` freezer at posteo dot de 2021-03-15 22:18 ` freezer at posteo dot de 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2021-03-15 21:47 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99608 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Component|driver |middle-end Resolution|--- |WONTFIX --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- This is done on purpose. It is based on the original file, rather than the preprocessed source or otherwise. With stdin, there is no original file being referenced. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/99608] gcc doesn't print diagnostics carets when file is passed through stdin 2021-03-15 21:36 [Bug driver/99608] New: gcc doesn't print diagnostics carets when file is passed through stdin freezer at posteo dot de 2021-03-15 21:47 ` [Bug middle-end/99608] " pinskia at gcc dot gnu.org @ 2021-03-15 22:13 ` freezer at posteo dot de 2021-03-15 22:18 ` freezer at posteo dot de 2 siblings, 0 replies; 4+ messages in thread From: freezer at posteo dot de @ 2021-03-15 22:13 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99608 --- Comment #2 from freezer at posteo dot de --- That's too bad. For my use case it would be more efficient if I passed the file directly to gcc through stdin. There is really no way to change this, maybe through an option? With clang this works as expected. The same diagnostics are printed independent of whether the file was passed through stdin or as a command-line argument. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug middle-end/99608] gcc doesn't print diagnostics carets when file is passed through stdin 2021-03-15 21:36 [Bug driver/99608] New: gcc doesn't print diagnostics carets when file is passed through stdin freezer at posteo dot de 2021-03-15 21:47 ` [Bug middle-end/99608] " pinskia at gcc dot gnu.org 2021-03-15 22:13 ` freezer at posteo dot de @ 2021-03-15 22:18 ` freezer at posteo dot de 2 siblings, 0 replies; 4+ messages in thread From: freezer at posteo dot de @ 2021-03-15 22:18 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99608 --- Comment #3 from freezer at posteo dot de --- In my opinion the current behavior is somehow inconsistent since the carets are displayed for included files. Example: // test.cpp #include <coroutine> int main(int argc, char **argv) { return 0; } $ cat test.cpp | g++ -Wall -Wextra -xc++ - In file included from <stdin>:1: /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/include/g++-v10/coroutine:295:2: error: #error "the coroutine header requires -fcoroutines" 295 | #error "the coroutine header requires -fcoroutines" | ^~~~~ <stdin>: In function ‘int main(int, char**)’: <stdin>:3:14: warning: unused parameter ‘argc’ [-Wunused-parameter] <stdin>:3:27: warning: unused parameter ‘argv’ [-Wunused-parameter] ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2021-03-15 22:18 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2021-03-15 21:36 [Bug driver/99608] New: gcc doesn't print diagnostics carets when file is passed through stdin freezer at posteo dot de 2021-03-15 21:47 ` [Bug middle-end/99608] " pinskia at gcc dot gnu.org 2021-03-15 22:13 ` freezer at posteo dot de 2021-03-15 22:18 ` freezer at posteo dot de
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