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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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9
src/structs.h
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@@ -756,10 +756,11 @@ typedef struct memline
int ml_stack_top; // current top of ml_stack
int ml_stack_size; // total number of entries in ml_stack
#define ML_EMPTY 1 // empty buffer
#define ML_LINE_DIRTY 2 // cached line was changed and allocated
#define ML_LOCKED_DIRTY 4 // ml_locked was changed
#define ML_LOCKED_POS 8 // ml_locked needs positive block number
#define ML_EMPTY 0x01 // empty buffer
#define ML_LINE_DIRTY 0x02 // cached line was changed and allocated
#define ML_LOCKED_DIRTY 0x04 // ml_locked was changed
#define ML_LOCKED_POS 0x08 // ml_locked needs positive block number
#define ML_ALLOCATED 0x10 // ml_line_ptr is an allocated copy
int ml_flags;
colnr_T ml_line_len; // length of the cached line, including NUL