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libdm: handle pool errors in dm_histogram_to_string()

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This commit is contained in:
Bryn M. Reeves 2015-09-07 12:01:20 +01:00
parent e75b4bc2df
commit 0f5933ecc1
1 changed files with 8 additions and 3 deletions
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11
libdm/libdm-stats.c
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@ -2222,7 +2222,8 @@ const char *dm_histogram_to_string(const struct dm_histogram *dmh, int bin,
/* Set bounds string to the empty string. */ /* Set bounds string to the empty string. */
bounds_buf[0] = '\0'; bounds_buf[0] = '\0';
dm_pool_begin_object(mem, 64); if (!dm_pool_begin_object(mem, 64))
return_0;
for (bin = start; bin <= last; bin++) { for (bin = start; bin <= last; bin++) {
if (bounds) { if (bounds) {
@ -2277,9 +2278,13 @@ const char *dm_histogram_to_string(const struct dm_histogram *dmh, int bin,
goto_bad; goto_bad;
width = minwidth; /* re-set histogram column width. */ width = minwidth; /* re-set histogram column width. */
dm_pool_grow_object(mem, buf, (size_t) len); if (!dm_pool_grow_object(mem, buf, (size_t) len))
goto_bad;
} }
dm_pool_grow_object(mem, "\0", 1);
if (!dm_pool_grow_object(mem, "\0", 1))
goto_bad;
return (const char *) dm_pool_end_object(mem); return (const char *) dm_pool_end_object(mem);
bad: bad: