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Fix 'maybe_unused' attribute in 2.x #306

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Fix 'maybe_unused' attribute in 2.x #306

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4 changes: 4 additions & 0 deletions ext/bigdecimal/bigdecimal.c
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,11 @@ static ID id_eq;
static ID id_half;

/* MACRO's to guard objects from GC by keeping them in stack */
#ifdef RBIMPL_ATTR_MAYBE_UNUSED
#define ENTER(n) RBIMPL_ATTR_MAYBE_UNUSED() volatile VALUE vStack[n];int iStack=0
#else
#define ENTER(n) volatile VALUE RB_UNUSED_VAR(vStack[n]);int iStack=0
#endif
#define PUSH(x) (vStack[iStack++] = (VALUE)(x))
#define SAVE(p) PUSH((p)->obj)
#define GUARD_OBJ(p,y) ((p)=(y), SAVE(p))
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