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StrFormat() is a printf-like function, mark it as such, fix fallout. #727

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merged 1 commit into from
Nov 27, 2018
Merged

StrFormat() is a printf-like function, mark it as such, fix fallout. #727

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11 changes: 8 additions & 3 deletions src/benchmark_register.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -182,14 +182,19 @@ bool BenchmarkFamilies::FindBenchmarks(
}
}

instance.name += StrFormat("%d", arg);
// we know that the args are always non-negative (see 'AddRange()'),
// thus print as 'unsigned'. BUT, do a cast due to the 32-bit builds.
instance.name += StrFormat("%lu", static_cast<unsigned long>(arg));
++arg_i;
}

if (!IsZero(family->min_time_))
instance.name += StrFormat("/min_time:%0.3f", family->min_time_);
if (family->iterations_ != 0)
instance.name += StrFormat("/iterations:%d", family->iterations_);
if (family->iterations_ != 0) {
instance.name +=
StrFormat("/iterations:%lu",
static_cast<unsigned long>(family->iterations_));
}
if (family->repetitions_ != 0)
instance.name += StrFormat("/repeats:%d", family->repetitions_);

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6 changes: 5 additions & 1 deletion src/string_util.h
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Expand Up @@ -12,7 +12,11 @@ void AppendHumanReadable(int n, std::string* str);

std::string HumanReadableNumber(double n, double one_k = 1024.0);

std::string StrFormat(const char* format, ...);
#ifdef __GNUC__
__attribute__((format(printf, 1, 2)))
#endif
std::string
StrFormat(const char* format, ...);

inline std::ostream& StrCatImp(std::ostream& out) BENCHMARK_NOEXCEPT {
return out;
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12 changes: 12 additions & 0 deletions test/reporter_output_test.cc
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Expand Up @@ -219,6 +219,18 @@ ADD_CASES(TC_JSONOut,
{"\"run_type\": \"iteration\",$", MR_Next}});
ADD_CASES(TC_CSVOut, {{"^\"BM_arg_names/first:2/5/third:4\",%csv_report$"}});

// ========================================================================= //
// ------------------------ Testing Big Args Output ------------------------ //
// ========================================================================= //

void BM_BigArgs(benchmark::State& state) {
for (auto _ : state) {
}
}
BENCHMARK(BM_BigArgs)->RangeMultiplier(2)->Range(1U << 30U, 1U << 31U);
ADD_CASES(TC_ConsoleOut, {{"^BM_BigArgs/1073741824 %console_report$"},
{"^BM_BigArgs/2147483648 %console_report$"}});

// ========================================================================= //
// ----------------------- Testing Complexity Output ----------------------- //
// ========================================================================= //
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