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assert after MEM_CALLOC

--- a/3rd/mp/test/ld.c

+++ b/3rd/mp/test/ld.c

@@ -13,7 +13,9 @@

 static void

 ldbits(ldint *a, int n)

 {

-	a->b = realloc(a->b, n);

+	void *b = realloc(a->b, n);

+	assert(b != nil);

+	a->b = b;

 	a->n = n;

 }

@@ -67,8 +69,10 @@

 	ldint *a;

 	a = malloc(sizeof(ldint));

+	assert(a != nil);

 	if(n <= 0) n = 1;

 	a->b = malloc(n);

+	assert(a->b != nil);

 	a->n = n;

 	return a;

 }

--- a/cvalues.c

+++ b/cvalues.c

@@ -849,6 +849,7 @@

 {

 	cvalue_t *cv;

 	cv = MEM_CALLOC(CVALUE_NWORDS, sizeof(*cv));

+	assert(cv != nil);

 	cv->type = FL(builtintype);

 	cv->data = &cv->_space[0];

 	cv->len = sizeof(value_t);

--- a/types.c

+++ b/types.c

@@ -68,6 +68,7 @@

 define_opaque_type(value_t sym, size_t sz, cvtable_t *vtab, cvinitfunc_t init)

 {

 	fltype_t *ft = MEM_CALLOC(1, sizeof(fltype_t));

+	assert(ft != nil);

 	ft->type = sym;

 	ft->numtype = NONNUMERIC;

 	ft->size = sz;