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Avoid reading below the start of a stack variable in tokenize_file().

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We would wrongly overwrite the prior stack byte if it happened to
contain '\n' or '\r'.  New in 9.3, so no back-patch.
This commit is contained in:
Noah Misch 2013-06-12 19:50:52 -04:00
parent 813895e4ac
commit 3a5d0c5533
1 changed files with 3 additions and 3 deletions
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6
src/backend/libpq/hba.c
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@ -411,9 +411,9 @@ tokenize_file(const char *filename, FILE *file,
line_number, filename)));
/* Strip trailing linebreak from rawline */
while (rawline[strlen(rawline) - 1] == '\n' ||
rawline[strlen(rawline) - 1] == '\r')
rawline[strlen(rawline) - 1] = '\0';
lineptr = rawline + strlen(rawline) - 1;
while (lineptr >= rawline && (*lineptr == '\n' || *lineptr == '\r'))
*lineptr-- = '\0';
lineptr = rawline;
while (strlen(lineptr) > 0)