[23.x] Additional backports for 23.x #27475
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These occur when building with GCC 12.1.
It might be the case that these would be suppressed by updating the
package, but that would also require installing new build tools (meson),
as well as potentially more dependencies (wayland).
```bash
In function 'ExprCreateBoolean',
inlined from 'BoolVarCreate' at src/xkbcomp/ast-build.c:316:19:
src/xkbcomp/ast-build.c:119:23: error: array subscript 'ExprDef[0]' is partly outside array bounds of 'unsigned char[32]' [-Werror=array-bounds]
119 | expr->boolean.set = set;
| ~~~~~~~~~~~~~~~~~~^~~~~
In function 'ExprCreate',
inlined from 'ExprCreateBoolean' at src/xkbcomp/ast-build.c:118:5,
inlined from 'BoolVarCreate' at src/xkbcomp/ast-build.c:316:19:
src/xkbcomp/ast-build.c:75:21: note: object of size 32 allocated by 'malloc'
75 | ExprDef *expr = malloc(size);
| ^~~~~~~~~~~~
```
Github-Pull: bitcoin#25436
Rebased-From: 1bdbbbd
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This is causing build failures in some build environments, like NixOS. I don't think we are going to patch bdb at this point, and this warning has existed for as long as we've used bdb. Fixes bitcoin#25211. Tested (in Docker) with: ```bash docker run -it nixos/nix nix-shell -p gitMinimal gcc12 libtool pkg-config curl gnumake patch autoconf automake git clone https://github.com/bitcoin/bitcoin make -C bitcoin/depends bdb ``` Co-authored-by: Ryan Ofsky <ryan@ofsky.org> Github-Pull: bitcoin#25763 Rebased-From: b46c6ec
Compiling bdb with clang-16 on aarch64 (hardware) currently fails:
```bash
make -C depends/ bdb CC=clang CXX=clang++
...
checking for mutexes... UNIX/fcntl
configure: WARNING: NO SHARED LATCH IMPLEMENTATION FOUND FOR THIS PLATFORM.
configure: error: Unable to find a mutex implementation
```
Looking at config.log we've got:
```bash
configure:18704: checking for mutexes
configure:18815: clang -o conftest -pipe -std=c11 -O2 -Wno-error=implicit-function-declaration -Wno-error=format-security -I/bitcoin/depends/aarch64-unknown-linux-gnu/include -D_GNU_SOURCE -D_REENTRANT -L/bitcoin/depends/aarch64-unknown-linux-gnu/lib conftest.c -lpthread >&5
conftest.c:45:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
main() {
^
int
conftest.c:50:2: warning: call to undeclared library function 'exit' with type 'void (int) __attribute__((noreturn))'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
exit (
^
conftest.c:50:2: note: include the header <stdlib.h> or explicitly provide a declaration for 'exit'
1 warning and 1 error generated.
```
Clang-16 changed `-Wimplicit-function-declaration` and `-Wimplicit-int`
warnings into errors, see:
https://releases.llvm.org/16.0.0/tools/clang/docs/ReleaseNotes.html#potentially-breaking-changes.
> The -Wimplicit-function-declaration and -Wimplicit-int warnings now
> default to an error in C99, C11, and C17. As of C2x, support for implicit
> function declarations and implicit int has been removed, and the
> warning options will have no effect. Specifying -Wimplicit-int in
> C89 mode will now issue warnings instead of being a noop.
Github-Pull: bitcoin#27462
Rebased-From: f8b8458
sedited
approved these changes
Apr 30, 2023
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Any further backports for 23.x. Currently: