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Fix a bug in stack overflow error handling. This fixes half of Bug
#115555. The error from s_push() on stack overflow was -1, which was passed through unchanged by push(), but not tested for by push()'s caller -- which only expected positive error codes. Fixed by changing s_push() to return E_NOMEM on stack overflow. (Not quite the proper error code either, but I can't be bothered adding a new E_STACKOVERFLOW error code in all the right places.)
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@ -40,7 +40,7 @@ s_push(register stack *s, dfa *d, node *parent)
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register stackentry *top;
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if (s->s_top == s->s_base) {
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fprintf(stderr, "s_push: parser stack overflow\n");
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return -1;
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return E_NOMEM;
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}
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top = --s->s_top;
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top->s_dfa = d;
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