at91bootstrap-3: Fix build failure with GCC 15 #191
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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 <bonet@grenoble.cnrs.fr>
(cherry picked from commit 32bbb4f)
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This is a backport of commit 32bbb4f (pull request #188). It targets the branch at91bootstrap-3.x, which has the exact same code in
include/types.has the 4.x branch (only the comments differ).