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comparison src/memline.c @ 6989:c0a23e04c929 v7.4.812

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patch 7.4.812 Problem: Gcc sanitizer complains about using a NULL pointer to memmove(). Solution: Only call memmove when there is something to move. (Vittorio Zecca)
author Bram Moolenaar <bram@vim.org>
date Sat, 08 Aug 2015 18:23:46 +0200
parents 62ba356c2d4e
children 1886f2863437
comparison
equal deleted inserted replaced
6988:e86ada5d3fa0 6989:c0a23e04c929
3832 3832
3833 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) * 3833 newstack = (infoptr_T *)alloc((unsigned)sizeof(infoptr_T) *
3834 (buf->b_ml.ml_stack_size + STACK_INCR)); 3834 (buf->b_ml.ml_stack_size + STACK_INCR));
3835 if (newstack == NULL) 3835 if (newstack == NULL)
3836 return -1; 3836 return -1;
3837 mch_memmove(newstack, buf->b_ml.ml_stack, 3837 if (top > 0)
3838 mch_memmove(newstack, buf->b_ml.ml_stack,
3838 (size_t)top * sizeof(infoptr_T)); 3839 (size_t)top * sizeof(infoptr_T));
3839 vim_free(buf->b_ml.ml_stack); 3840 vim_free(buf->b_ml.ml_stack);
3840 buf->b_ml.ml_stack = newstack; 3841 buf->b_ml.ml_stack = newstack;
3841 buf->b_ml.ml_stack_size += STACK_INCR; 3842 buf->b_ml.ml_stack_size += STACK_INCR;
3842 } 3843 }