path: root/configfile.c
diff options
authorJohn Keeping <john@keeping.me.uk>2016-08-07 15:54:14 +0100
committerJohn Keeping <john@keeping.me.uk>2016-10-01 11:43:33 +0100
commit35df710a1fa21b62c5328e2c98f29a68a0312a25 (patch)
treedb984e301d72179483d6173138f2323b02b98967 /configfile.c
parentgit: update to v2.10.0 (diff)
configfile: fix EOF handling
Currently we can end up passing EOF to isspace(), which is in fact libgit's sane_isspace which does: ((sane_ctype[(unsigned char)(x)] & (GIT_SPACE)) != 0) It is very unlikely that EOF cast to "unsigned char" will end up in a character that has the GIT_SPACE bit set, but the standard only requires that EOF be a negative integer, so it could access any value in the sane_ctype array. If it does end up returning true for isspace() then this loop will never terminate, so handle EOF as a special value in the same way as the other loops in this function. Signed-off-by: John Keeping <john@keeping.me.uk>
Diffstat (limited to '')
1 files changed, 3 insertions, 1 deletions
diff --git a/configfile.c b/configfile.c
index 5b0d880..e039109 100644
--- a/configfile.c
+++ b/configfile.c
@@ -39,7 +39,9 @@ static int read_config_line(FILE *f, struct strbuf *name, struct strbuf *value)
/* Skip comments and preceding spaces. */
for(;;) {
- if (c == '#' || c == ';')
+ if (c == EOF)
+ return 0;
+ else if (c == '#' || c == ';')
else if (!isspace(c))