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patch 9.0.0013: reproducing memory access errors can be difficult

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Problem:    Reproducing memory access errors can be difficult.
Solution:   When testing, copy each line to allocated memory, so that valgrind
            can detect accessing memory before and/or after it.  Fix uncovered
            problems.
This commit is contained in:
Bram Moolenaar
2022-06-30 22:13:59 +01:00
parent cdbfc6dbab
commit fa4873ccfc
15 changed files with 119 additions and 33 deletions
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4
src/edit.c
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@@ -5013,7 +5013,7 @@ ins_tab(void)
mch_memmove(newp + col, ptr + i,
curbuf->b_ml.ml_line_len - col - i);
if (curbuf->b_ml.ml_flags & ML_LINE_DIRTY)
if (curbuf->b_ml.ml_flags & (ML_LINE_DIRTY | ML_ALLOCATED))
vim_free(curbuf->b_ml.ml_line_ptr);
curbuf->b_ml.ml_line_ptr = newp;
curbuf->b_ml.ml_line_len -= i;
@@ -5232,10 +5232,10 @@ ins_copychar(linenr_T lnum)
}
// try to advance to the cursor column
validate_virtcol();
temp = 0;
line = ptr = ml_get(lnum);
prev_ptr = ptr;
validate_virtcol();
while ((colnr_T)temp < curwin->w_virtcol && *ptr != NUL)
{
prev_ptr = ptr;