Fix build failure with GCC 15 #188
Closed
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
include/types.h typedefs ‘bool’ and macro-defines ‘false’ and ‘true’.
However, since C23, these are predefine keywords. As C23 is the default
C dialect for GCC 15, building with this compiler fails with:
include/types.h:23:23: error: ‘bool’ cannot be defined via ‘typedef’
23 | typedef unsigned char bool;
| ^~~~
include/types.h:23:23: note: ‘bool’ is a keyword with ‘-std=c23’ onwards
Fix this build failure by only defining ‘bool’, ‘false’ and ‘true’ on C
dialects older than C23.
Signed-off-by: Edgar Bonet <[email protected]>
|
changed commit msg to latin1 and pushed. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Building with GCC 15 fails with:
This is because GCC 15 default to the C23 dialect of C, which predefines
bool(andfalseandtrue) as keywords.This pull request fixes the build failure by conditioning the definitions of
bool,falseandtrueon the C dialect in use. Alternative approaches could be:<stdbool.h>, which should work on all C versions since C99 (but is deprecated in C23)-std=…compiler flag in the Makefile