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patch 8.0.0337: invalid memory access in :recover command

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Problem:    Invalid memory access in :recover command.
Solution:   Avoid access before directory name. (Dominique Pelle,
            closes #1488)
This commit is contained in:
Bram Moolenaar
2017-02-18 16:59:02 +01:00
parent 3df0173fa6
commit c525e3a1c2
5 changed files with 26 additions and 4 deletions
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12
src/memline.c
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@@ -1863,8 +1863,10 @@ recover_names(
else
{
#if defined(UNIX) || defined(WIN3264)
p = dir_name + STRLEN(dir_name);
if (after_pathsep(dir_name, p) && p[-1] == p[-2])
int len = STRLEN(dir_name);
p = dir_name + len;
if (after_pathsep(dir_name, p) && len > 1 && p[-1] == p[-2])
{
/* Ends with '//', Use Full path for swap name */
tail = make_percent_swname(dir_name, fname_res);
@@ -3922,8 +3924,10 @@ makeswapname(
#endif
#if defined(UNIX) || defined(WIN3264) /* Need _very_ long file names */
s = dir_name + STRLEN(dir_name);
if (after_pathsep(dir_name, s) && s[-1] == s[-2])
int len = STRLEN(dir_name);
s = dir_name + len;
if (after_pathsep(dir_name, s) && len > 1 && s[-1] == s[-2])
{ /* Ends with '//', Use Full path */
r = NULL;
if ((s = make_percent_swname(dir_name, fname)) != NULL)