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mdbx: backport - fix Coverity warning (minor, paranoia).

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Change-Id: I232377a03244dc33beb4f332c0024b454027f659
This commit is contained in:
Leo Yuriev 2018-06-21 17:26:29 +03:00
parent 408848a425
commit db50fb8726
1 changed files with 8 additions and 1 deletions
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9
src/mdbx.c
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@ -1134,7 +1134,7 @@ const char *__cold mdbx_strerror(int errnum) {
const char *msg = __mdbx_strerr(errnum); const char *msg = __mdbx_strerr(errnum);
if (!msg) { if (!msg) {
#ifdef _MSC_VER #ifdef _MSC_VER
static __thread char buffer[1024]; static char buffer[1024];
size_t size = FormatMessageA( size_t size = FormatMessageA(
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL,
errnum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer, errnum, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buffer,
@ -1142,6 +1142,13 @@ const char *__cold mdbx_strerror(int errnum) {
if (size) if (size)
msg = buffer; msg = buffer;
#else #else
if (errnum < 0) {
static char buffer[32];
int rc = snprintf(buffer, sizeof(buffer) - 1, "unknown error %d", errnum);
assert(rc > 0);
(void)rc;
return buffer;
}
msg = strerror(errnum); msg = strerror(errnum);
#endif #endif
} }