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timers: just make the buffers big enough

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This commit is contained in:
Brian Wolfe 2020-06-15 15:58:30 -07:00
parent f25ea40ae1
commit 7cc06ef80c
1 changed files with 8 additions and 5 deletions
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13
src/timers.cc
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@ -189,8 +189,9 @@ std::string LocalDateTimeString() {
std::size_t timestamp_len;
long int offset_minutes;
char tz_offset_sign = '+';
char tz_offset[kTzOffsetLen + 1];
char storage[kTimestampLen + kTzOffsetLen + 1];
// Long enough buffers to avoid format-overflow warnings
char tz_offset[128];
char storage[128];
#if defined(BENCHMARK_OS_WINDOWS)
std::tm *timeinfo_p = ::localtime(&now);
@ -214,8 +215,8 @@ std::string LocalDateTimeString() {
}
tz_len = ::snprintf(tz_offset, sizeof(tz_offset), "%c%02li:%02li",
tz_offset_sign, (offset_minutes / 100), offset_minutes % 100);
CHECK(tz_len == 6);
tz_offset_sign, offset_minutes / 100, offset_minutes % 100);
CHECK(tz_len == kTzOffsetLen);
((void)tz_len); // Prevent unused variable warning in optimized build.
} else {
// Unknown offset. RFC3339 specifies that unknown local offsets should be
@ -233,7 +234,9 @@ std::string LocalDateTimeString() {
timestamp_len = std::strftime(storage, sizeof(storage), "%Y-%m-%dT%H:%M:%S",
timeinfo_p);
CHECK(timestamp_len == kTimestampLen);
((void)timestamp_len); // Prevent unused variable warning in optimized build.
// Prevent unused variable warning in optimized build.
((void)timestamp_len);
((void)kTimestampLen);
std::strncat(storage, tz_offset, kTzOffsetLen + 1);
return std::string(storage);