[Bug c/69972] duplicate integer overflow diagnostic in constant expressions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69972 Martin Sebor changed: What|Removed |Added Last reconfirmed|2016-02-29 00:00:00 |2021-6-4 Known to fail||10.2.0, 11.0, 6.3.0, 7.0.1, ||8.3.0, 9.3.0 --- Comment #5 from Martin Sebor --- Reconfirmed with GCC 11.
[Bug c/69972] duplicate integer overflow diagnostic in constant expressions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69972 Manuel López-Ibáñez changed: What|Removed |Added CC||manu at gcc dot gnu.org --- Comment #4 from Manuel López-Ibáñez --- (In reply to Bernd Schmidt from comment #3) > For C I'm thinking it should be straightforward to set/check TREE_NO_WARNING > (I have an untested patch). The duplicate warning shows that we are doing two times the same work. Wouldn't it be better to avoid that? > For the C++ testcase the problem is that the first one is a warning, while > the second one is an error - we can't really omit that. The C/C++ FEs share almost no code in this respect. It doesn't make sense to keep both issues conflated. C++ bug is now PR70057.
[Bug c/69972] duplicate integer overflow diagnostic in constant expressions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69972 Bernd Schmidt changed: What|Removed |Added CC||bernds at gcc dot gnu.org --- Comment #3 from Bernd Schmidt --- For C I'm thinking it should be straightforward to set/check TREE_NO_WARNING (I have an untested patch). For the C++ testcase the problem is that the first one is a warning, while the second one is an error - we can't really omit that. The C++ errors become even more entertaining when you add -fpermissive: 69972-b.cc:2:16: warning: integer overflow in expression [-Woverflow] 69972-b.cc:2:20: warning: overflow in constant expression [-fpermissive] 69972-b.cc:2:20: note: in template argument for type ‘int’ 69972-b.cc: In instantiation of ‘struct S<-2147483648>’: 69972-b.cc:2:22: required from here 69972-b.cc:1:27: warning: overflow in constant expression [-fpermissive] 69972-b.cc:1:27: note: in template argument for type ‘int’ 69972-b.cc:1:27: warning: overflow in constant expression [-fpermissive] 69972-b.cc:1:27: note: in template argument for type ‘int’ 69972-b.cc:1:27: warning: overflow in constant expression [-fpermissive] 69972-b.cc:1:27: note: in template argument for type ‘int’
[Bug c/69972] duplicate integer overflow diagnostic in constant expressions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69972 --- Comment #2 from Marek Polacek --- The first warning is shown by default and comes from parser_build_binary_op: 3612 if (TREE_OVERFLOW_P (result.value) 3613 && !TREE_OVERFLOW_P (arg1.value) 3614 && !TREE_OVERFLOW_P (arg2.value)) 3615 overflow_warning (location, result.value); The second is emitted with -Wpedantic in build_enumerator: 8199 constant_expression_warning (value);
[Bug c/69972] duplicate integer overflow diagnostic in constant expressions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69972 Marek Polacek changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2016-02-29 CC||mpolacek at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Marek Polacek --- Confirmed.
