diff options
Diffstat (limited to 'src/os_win32.c')
| -rw-r--r-- | src/os_win32.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/os_win32.c b/src/os_win32.c index 0ca47d0fe..423ea8903 100644 --- a/src/os_win32.c +++ b/src/os_win32.c @@ -211,13 +211,16 @@ static char_u *exe_path = NULL; static void get_exe_name(void) { - char temp[MAXPATHL]; + /* Maximum length of $PATH is more than MAXPATHL. 8191 is often mentioned + * as the maximum length that works (plus a NUL byte). */ +#define MAX_ENV_PATH_LEN 8192 + char temp[MAX_ENV_PATH_LEN]; char_u *p; if (exe_name == NULL) { /* store the name of the executable, may be used for $VIM */ - GetModuleFileName(NULL, temp, MAXPATHL - 1); + GetModuleFileName(NULL, temp, MAX_ENV_PATH_LEN - 1); if (*temp != NUL) exe_name = FullName_save((char_u *)temp, FALSE); } @@ -232,10 +235,16 @@ get_exe_name(void) * "!xxd" it's found in our starting directory. Needed because * SearchPath() also looks there. */ p = mch_getenv("PATH"); - if (STRLEN(p) + STRLEN(exe_path) + 2 < MAXPATHL) + if (p == NULL + || STRLEN(p) + STRLEN(exe_path) + 2 < MAX_ENV_PATH_LEN) { - STRCPY(temp, p); - STRCAT(temp, ";"); + if (p == NULL || *p == NUL) + temp[0] = NUL; + else + { + STRCPY(temp, p); + STRCAT(temp, ";"); + } STRCAT(temp, exe_path); vim_setenv((char_u *)"PATH", temp); } |