MySQL Bugs: #7145: Fails to build on arm

Bug #7145	Fails to build on arm
Submitted:	9 Dec 2004 20:23	Modified:	24 Jan 2005 16:15
Reporter:	Christian Hammers (Silver Quality Contributor) (OCA)	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server: Compiling	Severity:	S2 (Serious)
Version:	4.1.7	OS:	Linux (Debian GNU/Linux on arm)
Assigned to:	Kent Boortz	CPU Architecture:	ARM

Description:
Hello

I'm unable to compile MySQL on arm. It works fine on i386, hppa, s390 etc...
The complete build log is available at:
http://buildd.debian.org/fetch.php?&pkg=mysql-dfsg-4.1&ver=4.1.7-4&arch=arm&stamp=11024189...

bye,

-christian-

 gcc -DDEFAULT_CHARSET_HOME=\"/usr\" -DDATADIR=\"/var/lib/mysql\" -DSHAREDIR=\"/usr/share/mysql\" -DDONT_USE_RAID -DMYSQL_CLIENT -I. -I. -I.. -I../include -O3 -DDBUG_OFF -DBIG_JOINS=1 -MT libmysql.lo -MD -MP -MF .deps/libmysql.Tpo -c libmysql.c  -fPIC -DPIC -o .libs/libmysql.o
libmysql.c: In function `fetch_result_double':
libmysql.c:3783: warning: dereferencing `void *' pointer
libmysql.c:3783: error: invalid use of void expression
make[3]: *** [libmysql.lo] Error 1

How to repeat:
-

Suggested fix:
-

I attached a patch

Ok, I guess I can't attach files (why not?). So, here's a copy-paste of the patch,

--- include/my_global.h 2005-01-07 20:39:46.000000000 -0600
+++ include/my_global.h 2005-01-07 20:40:22.000000000 -0600
@@ -1072,7 +1072,7 @@
 #define float4store(V,M) memcpy_fixed((byte*) V,(byte*) (&M),sizeof(float))
 
 #if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN)
-#define doublestore(T,V) do { *(T)= ((byte *) &V)[4];\
+#define doublestore(T,V) do { *(((char*)T)+0)=(char) ((byte *) &V)[4];\
                               *(((char*)T)+1)=(char) ((byte *) &V)[5];\
                               *(((char*)T)+2)=(char) ((byte *) &V)[6];\
                               *(((char*)T)+3)=(char) ((byte *) &V)[7];\

You can also see,

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=285071

for the patch file proper.

PS. I would keep the +0 in the patch since it adds continuity to the macro.

Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.

If necessary, you can access the source repository and build the latest
available version, including the bugfix, yourself. More information 
about accessing the source trees is available at
    http://www.mysql.com/doc/en/Installing_source_tree.html