defines: avoid underscore-prefixed defines

Double-underscored or underscore plus uppercase letter at least.

... as they're claimed to be reserved.

Reported-by: patnyb on github

Fixes #4254
Closes #4255

1 files changed, 8 insertions, 8 deletions

diff --git a/docs/examples/hiperfifo.c b/docs/examples/hiperfifo.c
index 6f176365b..c02659b9a 100644
--- a/docs/examples/hiperfifo.c
+++ b/docs/examples/hiperfifo.c
@@ -109,7 +109,7 @@ typedef struct _SockInfo
   GlobalInfo *global;
 } SockInfo;
 
-#define __case(code) \
+#define mycase(code) \
   case code: s = __STRING(code)
 
 /* Die if we get a bad CURLMcode somewhere */
@@ -118,14 +118,14 @@ static void mcode_or_die(const char *where, CURLMcode code)
   if(CURLM_OK != code) {
     const char *s;
     switch(code) {
-      __case(CURLM_BAD_HANDLE); break;
-      __case(CURLM_BAD_EASY_HANDLE); break;
-      __case(CURLM_OUT_OF_MEMORY); break;
-      __case(CURLM_INTERNAL_ERROR); break;
-      __case(CURLM_UNKNOWN_OPTION); break;
-      __case(CURLM_LAST); break;
+      mycase(CURLM_BAD_HANDLE); break;
+      mycase(CURLM_BAD_EASY_HANDLE); break;
+      mycase(CURLM_OUT_OF_MEMORY); break;
+      mycase(CURLM_INTERNAL_ERROR); break;
+      mycase(CURLM_UNKNOWN_OPTION); break;
+      mycase(CURLM_LAST); break;
       default: s = "CURLM_unknown"; break;
-      __case(CURLM_BAD_SOCKET);
+      mycase(CURLM_BAD_SOCKET);
       fprintf(MSG_OUT, "ERROR: %s returns %s\n", where, s);
       /* ignore this error */
       return;