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| author | drh <drh@noemail.net> | 2015-07-14 22:43:37 +0000 |
|---|---|---|
| committer | drh <drh@noemail.net> | 2015-07-14 22:43:37 +0000 |
| commit | a8dbd52abbc0579601e3e56aa43ba03077054fb9 (patch) | |
| tree | 2fcb5f5c73db8217d72205a6f864d75f1bf0e148 /src/printf.c | |
| parent | bc50bb7f53a562d5669fdc6240e23e17175b63b0 (diff) | |
| download | sqlite-a8dbd52abbc0579601e3e56aa43ba03077054fb9.tar.gz sqlite-a8dbd52abbc0579601e3e56aa43ba03077054fb9.zip | |
Amplify the comment on renderLogMsg() that explains the problems associated
with calling sqlite3_log() from deep within the memory allocator.
FossilOrigin-Name: a73d7128fbca8dde5e90bd46ee915e39ae07dd1f
Diffstat (limited to 'src/printf.c')
| -rw-r--r-- | src/printf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/printf.c b/src/printf.c index 72b9497d7..018df412f 100644 --- a/src/printf.c +++ b/src/printf.c @@ -1012,6 +1012,11 @@ char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ ** sqlite3_log() must render into a static buffer. It cannot dynamically ** allocate memory because it might be called while the memory allocator ** mutex is held. +** +** sqlite3VXPrintf() might ask for *temporary* memory allocations for +** certain format characters (%q) or for very large precisions or widths. +** Care must be taken that any sqlite3_log() calls that occur while the +** memory mutex is held do not use these mechanisms. */ static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){ StrAccum acc; /* String accumulator */ |