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spellfile: Fix memory leak

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This commit is contained in:
ZyX 2017-04-09 22:33:45 +03:00
parent 35584594f5
commit aa857f9e48
1 changed files with 11 additions and 7 deletions
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18
src/nvim/spellfile.c
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@ -500,16 +500,18 @@ typedef struct spellinfo_S {
/// @param[out] buf Buffer to read to, must be at least n bytes long.
/// @param[in] n Amount of bytes to read.
/// @param fd FILE* to read from.
/// @param exit_code Code to run before returning.
///
/// @return Allows to proceed if everything is OK, returns SP_TRUNCERROR if
/// there are not enough bytes, returns SP_OTHERERROR if reading failed.
#define SPELL_READ_BYTES(buf, n, fd) \
#define SPELL_READ_BYTES(buf, n, fd, exit_code) \
do { \
const size_t n__SPRB = (n); \
FILE *const fd__SPRB = (fd); \
char *const buf__SPRB = (buf); \
const size_t read_bytes__SPRB = fread(buf__SPRB, 1, n__SPRB, fd__SPRB); \
if (read_bytes__SPRB != n__SPRB) { \
exit_code; \
return feof(fd__SPRB) ? SP_TRUNCERROR : SP_OTHERERROR; \
} \
} while (0)
@ -519,13 +521,14 @@ typedef struct spellinfo_S {
/// @return Allows to proceed if everything is OK, returns SP_TRUNCERROR if
/// there are not enough bytes, returns SP_OTHERERROR if reading failed,
/// returns SP_FORMERROR if read out a NUL byte.
#define SPELL_READ_NONNUL_BYTES(buf, n, fd) \
#define SPELL_READ_NONNUL_BYTES(buf, n, fd, exit_code) \
do { \
const size_t n__SPRNB = (n); \
FILE *const fd__SPRNB = (fd); \
char *const buf__SPRNB = (buf); \
SPELL_READ_BYTES(buf__SPRNB, n__SPRNB, fd__SPRNB); \
SPELL_READ_BYTES(buf__SPRNB, n__SPRNB, fd__SPRNB, exit_code); \
if (memchr(buf__SPRNB, NUL, (size_t)n__SPRNB)) { \
exit_code; \
return SP_FORMERROR; \
} \
} while (0)
@ -543,7 +546,7 @@ static inline int spell_check_magic_string(FILE *const fd)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_WARN_UNUSED_RESULT FUNC_ATTR_ALWAYS_INLINE
{
char buf[VIMSPELLMAGICL];
SPELL_READ_BYTES(buf, VIMSPELLMAGICL, fd);
SPELL_READ_BYTES(buf, VIMSPELLMAGICL, fd, );
if (memcmp(buf, VIMSPELLMAGIC, VIMSPELLMAGICL) != 0) {
return SP_FORMERROR;
}
@ -1001,7 +1004,7 @@ static int read_region_section(FILE *fd, slang_T *lp, int len)
if (len > 16) {
return SP_FORMERROR;
}
SPELL_READ_NONNUL_BYTES((char *)lp->sl_regions, (size_t)len, fd);
SPELL_READ_NONNUL_BYTES((char *)lp->sl_regions, (size_t)len, fd, );
lp->sl_regions[len] = NUL;
return 0;
}
@ -1065,7 +1068,7 @@ static int read_prefcond_section(FILE *fd, slang_T *lp)
if (n > 0) {
char buf[MAXWLEN + 1];
buf[0] = '^'; // always match at one position only
SPELL_READ_NONNUL_BYTES(buf + 1, (size_t)n, fd);
SPELL_READ_NONNUL_BYTES(buf + 1, (size_t)n, fd, );
buf[n + 1] = NUL;
lp->sl_prefprog[i] = vim_regcomp((char_u *)buf, RE_MAGIC | RE_STRING);
}
@ -1185,7 +1188,8 @@ static int read_sal_section(FILE *fd, slang_T *slang)
if (i < ccnt)
// store the char we got while checking for end of sm_lead
*p++ = c;
SPELL_READ_NONNUL_BYTES((char *)p, (size_t)ccnt, fd); // <salfrom>
SPELL_READ_NONNUL_BYTES( // <salfrom>
(char *)p, (size_t)ccnt, fd, xfree(smp->sm_lead));
p += ccnt;
*p++ = NUL;