Merge #6773: fix: hide multiple useless warnings for default build

eacd3df fmt: remove extra spaces in configure.ac (Konstantin Akimov)
82d73aa fix: hide multiple useless warnings for default build (Konstantin Akimov)

Pull request description:

  ## Issue being fixed or feature implemented

  Default build produces hundreds of warnings. These warnings are disabled for `--enable-werror`, but they all are show for regular builds.

      In file included from ./hash.h:16,
                   from ./bls/bls.h:8,
                   from ./evo/dmnstate.h:8,
                   from ./evo/deterministicmns.h:8,
                   from evo/deterministicmns.cpp:5:
      In member function ‘constexpr int base_blob<BITS>::Compare(const base_blob<BITS>&) const [with unsigned int BITS = 256]’,
          inlined from ‘constexpr bool operator!=(const base_blob<256>&, const base_blob<256>&)’ at ./uint256.h:58:96,
          inlined from ‘bool CheckProUpServTx(CDeterministicMNManager&, const CTransaction&, gsl::not_null<const CBlockIndex*>, TxValidationState&, bool)’ at evo/deterministicmns.cpp:1158:101:
      ./uint256.h:55:77: warning: ‘int __builtin_memcmp_eq(const void*, const void*, long unsigned int)’ specified bound 32 exceeds source size 0 [-Wstringop-overread]
         55 |     constexpr int Compare(const base_blob& other) const { return std::memcmp(m_data.data(), other.m_data.data(), WIDTH); }

  ## What was done?
  Hide useless warnings for default build too. They have no use.

  ## How Has This Been Tested?
  Configure with --enable-werror and without it:
  ```
  ./configure --prefix=$(pwd)/depends/x86_64-pc-linux-gnu  --enable-werror  --enable-debug  --enable-stacktraces  --enable-crash-hooks --enable-maintainer-mode
  ./configure --prefix=$(pwd)/depends/x86_64-pc-linux-gnu
  ```

  Works fine now!

  ## Breaking Changes
  N/A

  ## Checklist:
  - [x] I have performed a self-review of my own code
  - [ ] I have commented my code, particularly in hard-to-understand areas
  - [ ] I have added or updated relevant unit/integration/functional/e2e tests
  - [ ] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone

ACKs for top commit:
  UdjinM6:
    utACK eacd3df

Tree-SHA512: 563d5666db19d7af0b8ad9fc5957f49b63b0fcc6febcead3526aead72db6e4b62ba99a750d82eed9572f50005f519fc2006a911bf9975dd64b73d928cb030fa9

Author: PastaPastaPasta

configure.ac

@@ -450,15 +450,6 @@ if test "$enable_werror" = "yes"; then
   fi
   ERROR_CXXFLAGS=$CXXFLAG_WERROR
 
-  dnl -Warray-bounds cause problems with GCC. Do not treat these warnings as errors.
-  dnl Suppress -Warray-bounds entirely because of noisy output, currently unhappy with immer implementation.
-  AX_CHECK_COMPILE_FLAG([-Warray-bounds], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-array-bounds"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
-    #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
-      #error Non-GCC compiler detected, not setting flag
-    #endif
-    int main(void) { return 0; }
-  ])])
-
   dnl -Wattributes cause problems with some versions of GCC. Do not treat these warnings as errors.
   AX_CHECK_COMPILE_FLAG([-Wattributes], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-error=attributes"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
     #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
@@ -478,22 +469,31 @@ if test "$enable_werror" = "yes"; then
     #endif
     int main(void) { return 0; }
   ])])
-
-  dnl -Wstringop-overread and -Wstringop-overflow are broken in GCC. Suppress warnings entirely to avoid noisy output.
-  AX_CHECK_COMPILE_FLAG([-Wstringop-overread], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-stringop-overread"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
-    #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
-      #error Non-GCC compiler detected, not setting flag
-    #endif
-    int main(void) { return 0; }
-  ])])
-  AX_CHECK_COMPILE_FLAG([-Wstringop-overflow], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-stringop-overflow"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
-    #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
-      #error Non-GCC compiler detected, not setting flag
-    #endif
-    int main(void) { return 0; }
-  ])])
 fi
 
+dnl -Warray-bounds cause problems with GCC. Do not treat these warnings as errors.
+dnl Suppress -Warray-bounds entirely because of noisy output, currently unhappy with immer implementation.
+AX_CHECK_COMPILE_FLAG([-Warray-bounds], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-array-bounds"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
+  #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
+    #error Non-GCC compiler detected, not setting flag
+  #endif
+  int main(void) { return 0; }
+])])
+
+dnl -Wstringop-overread and -Wstringop-overflow are broken in GCC. Suppress warnings entirely to avoid noisy output.
+AX_CHECK_COMPILE_FLAG([-Wstringop-overread], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-stringop-overread"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
+  #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
+    #error Non-GCC compiler detected, not setting flag
+  #endif
+  int main(void) { return 0; }
+])])
+AX_CHECK_COMPILE_FLAG([-Wstringop-overflow], [NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-stringop-overflow"], [], [$CXXFLAG_WERROR], [AC_LANG_SOURCE([
+  #if defined(__clang__) || defined(__INTEL_COMPILER) || !defined(__GNUC__)
+    #error Non-GCC compiler detected, not setting flag
+  #endif
+  int main(void) { return 0; }
+])])
+
 AX_CHECK_COMPILE_FLAG([-Wall], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wall"], [], [$CXXFLAG_WERROR])
 AX_CHECK_COMPILE_FLAG([-Wextra], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wextra"], [], [$CXXFLAG_WERROR])
 AX_CHECK_COMPILE_FLAG([-Wgnu], [WARN_CXXFLAGS="$WARN_CXXFLAGS -Wgnu"], [], [$CXXFLAG_WERROR])