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cc: sbrk in bigger chunks as it grows, so it gets a chance to use the ram/swap available

--- a/sys/src/cmd/cc/macbody

+++ b/sys/src/cmd/cc/macbody

@@ -854,9 +854,16 @@

 	char *h;

 	long nh;

-	nh = NHUNK;

-	if(thunk >= 10L*NHUNK)

+	if(thunk >= 100L*NHUNK)

+		nh = 100L*NHUNK;

+	else if(thunk >= 50L*NHUNK)

+		nh = 50L*NHUNK;

+	else if(thunk >= 25L*NHUNK)

+		nh = 25L*NHUNK;

+	else if(thunk >= 10L*NHUNK)

 		nh = 10L*NHUNK;

+	else

+		nh = NHUNK;

 	h = (char*)mysbrk(nh);

 	if(h == (char*)-1) {

 		yyerror("out of memory");