Description of problem: #pragma successfully suppresses a warning at compile time but the same warning then appears again at link time. Version-Release number of selected component (if applicable): gcc-11.0.1-0.4.fc35.x86_64 How reproducible: 100% Steps to Reproduce: 1. prepare two source files: $ cat main.c void foo(char x[2]); int main() { char x[2]; #pragma GCC diagnostic ignored "-Wstringop-overflow" foo(x + 1); } $ cat foo.c void foo(char x[2]) { foo(x + 1); } 2. compile/link without LTO: $ gcc main.c foo.c 3. compile/link with LTO: $ gcc -flto main.c foo.c Actual results: The warning is not suppressed if LTO is enabled: main.c: In function ‘main’: main.c:6:5: warning: ‘foo’ accessing 2 bytes in a region of size 1 [-Wstringop-overflow=] 6 | foo(x + 1); | ^ main.c:6:5: note: referencing argument 1 of type ‘char *’ foo.c:1:6: note: in a call to function ‘foo’ 1 | void foo(char x[2]) | ^ Expected results: The warning should be suppressed even when LTO is enabled. Additional info: Originally reported by Dmitry Belyavskiy (internal bug #1938797).
This bug appears to have been reported against 'rawhide' during the Fedora 35 development cycle. Changing version to 35.
This message is a reminder that Fedora Linux 35 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora Linux 35 on 2022-12-13. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of '35'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, change the 'version' to a later Fedora Linux version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora Linux 35 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora Linux, you are encouraged to change the 'version' to a later version prior to this bug being closed.
This bug affects gcc-12.2.1-4.fc38.x86_64 as well. The reproducer in comment #0 still works out of the box.
This bug appears to have been reported against 'rawhide' during the Fedora Linux 38 development cycle. Changing version to 38.
This message is a reminder that Fedora Linux 38 is nearing its end of life. Fedora will stop maintaining and issuing updates for Fedora Linux 38 on 2024-05-21. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a 'version' of '38'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, change the 'version' to a later Fedora Linux version. Note that the version field may be hidden. Click the "Show advanced fields" button if you do not see it. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora Linux 38 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora Linux, you are encouraged to change the 'version' to a later version prior to this bug being closed.
Fedora Linux 38 entered end-of-life (EOL) status on 2024-05-21. Fedora Linux 38 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora Linux please feel free to reopen this bug against that version. Note that the version field may be hidden. Click the "Show advanced fields" button if you do not see the version field. If you are unable to reopen this bug, please file a new report against an active release. Thank you for reporting this bug and we are sorry it could not be fixed.
I can still reproduce the bug on Fedora Rawhide with gcc-14.1.1-1.fc41.x86_64. So I am reopening the bug as advised in comment #6.
This bug appears to have been reported against 'rawhide' during the Fedora Linux 42 development cycle. Changing version to 42.