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Re: [libvirt] Non-zero constant warning on RHEL 6.1 with 0.9.7

On 11/11/2011 04:06 PM, Eric Blake wrote:
On 11/08/2011 11:46 PM, Justin Clift wrote:
Hi guys,

Just checking 0.9.7 on RHEL 6.1 x86_64.  Noticed this when compiling
with make -j 3:

     CC     libvirt_lxc-command.o
   util/buf.c: In function 'virBufferEscape':
   util/buf.c:469: warning: logical '&&' with non-zero constant will always evaluate as true [-Wlogical-op]

Obviously not fatal, but it figured someone might want to keep things warning free. :)
This is a bug in gcc, although I'm not sure if anyone has raised a bug
report against the gcc folks yet:

I'm open to suggestions on how to work around it; perhaps we just need
to disable -Wlogical-op if glibc's headers are turning on the optimized
strchr (is that -D_FORTIFY_SOURCE that does it?) :(
This should work, no?

--- a/src/util/buf.c
+++ b/src/util/buf.c
@@ -466,7 +466,8 @@ virBufferEscape(virBufferPtr buf, const char *toescape,
     cur = str;
     out = escaped;
     while (*cur != 0) {
-        if (strchr(toescape, *cur))
+        char x[2] = { *cur, 0 };
+        if (strstr(toescape, x))
             *out++ = '\\';
         *out++ = *cur;


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