label as lvalue is a GCCism

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61558 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 6 deletions

diff --git a/regexec.c b/regexec.c
index 4582c35c3f..9b6232e30b 100644
--- a/regexec.c
+++ b/regexec.c
@@ -1461,9 +1461,9 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
 # define CASE(x) L_##x: sbegin = s; OPCODE_EXEC_HOOK;
 # define DEFAULT L_DEFAULT:
 # define NEXT sprev = sbegin; JUMP
-# define JUMP goto *oplabels[*p++]
+# define JUMP RB_GNUC_EXTENSION_BLOCK(goto *oplabels[*p++])
 
-  static const void *oplabels[] = {
+  RB_GNUC_EXTENSION static const void *oplabels[] = {
     &&L_OP_FINISH,               /* matching process terminator (no more alternative) */
     &&L_OP_END,                  /* pattern code terminator (success end) */
 
@@ -4617,4 +4617,3 @@ onig_copy_encoding(OnigEncodingType *to, OnigEncoding from)
 {
   *to = *from;
 }
-
diff --git a/vm_exec.h b/vm_exec.h
index 29120975ce..4362ace467 100644
--- a/vm_exec.h
+++ b/vm_exec.h
@@ -75,7 +75,7 @@ error !
 
 #define LABEL(x)  INSN_LABEL_##x
 #define ELABEL(x) INSN_ELABEL_##x
-#define LABEL_PTR(x) &&LABEL(x)
+#define LABEL_PTR(x) RB_GNUC_EXTENSION(&&LABEL(x))
 
 #define INSN_ENTRY_SIG(insn) \
   if (0) fprintf(stderr, "exec: %s@(%d, %d)@%s:%d\n", #insn, \
@@ -106,7 +106,7 @@ error !
 /* for GCC 3.4.x */
 #define TC_DISPATCH(insn) \
   INSN_DISPATCH_SIG(insn); \
-  goto *(void const *)GET_CURRENT_INSN(); \
+  RB_GNUC_EXTENSION_BLOCK(goto *(void const *)GET_CURRENT_INSN()); \
   ;
 
 #else
@@ -115,7 +115,7 @@ error !
 #define TC_DISPATCH(insn)  \
   DISPATCH_ARCH_DEPEND_WAY(insns_address_table[GET_CURRENT_INSN()]); \
   INSN_DISPATCH_SIG(insn); \
-  goto *insns_address_table[GET_CURRENT_INSN()]; \
+  RB_GNUC_EXTENSION_BLOCK(goto *insns_address_table[GET_CURRENT_INSN()]); \
   rb_bug("tc error");