Experiment: When is __ARM_FEATURE_UNALIGNED visible?

haskell · Sep 17, 2023 · 078bd5d · 078bd5d
1 parent 5267a0a
commit 078bd5d
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Showing 3 changed files with 8 additions and 2 deletions.
diff --git a/bytestring.cabal b/bytestring.cabal
@@ -66,7 +66,7 @@ Tested-With:         GHC==9.4.1,
                      GHC==8.0.2
 Build-Type:          Simple
 Cabal-Version:       >= 1.10
-extra-source-files:  README.md Changelog.md
+extra-source-files:  README.md Changelog.md include/bytestring-cpp-macros.h
 
 source-repository head
   type:     git
@@ -154,7 +154,6 @@ library
 
   include-dirs:      include
   includes:          fpstring.h
-                     bytestring-cpp-macros.h
   install-includes:  fpstring.h
                      bytestring-cpp-macros.h
 

diff --git a/cbits/fpstring.c b/cbits/fpstring.c
@@ -46,6 +46,10 @@
 #define USE_SIMD_COUNT
 #endif
 
+#if defined(__ARM_FEATURE_UNALIGNED)
+#warning "How about in C code?"
+#endif
+
 /* copy a string in reverse */
 void fps_reverse(unsigned char *q, unsigned char *p, size_t n) {
     p += n-1;

diff --git a/include/bytestring-cpp-macros.h b/include/bytestring-cpp-macros.h
@@ -2,6 +2,9 @@
 #error "bytestring-cpp-macros.h does not work in C code yet"
 #endif
 
+#if defined(__ARM_FEATURE_UNALIGNED)
+#warning "Is this macro ever actually visible to Haskell code?"
+#endif
 
 #if defined(i386_HOST_ARCH) || defined(x86_64_HOST_ARCH)       \
     || ((defined(arm_HOST_ARCH) || defined(aarch64_HOST_ARCH)) \