Subcommands can write things like UTF-16, which some terminals can
understand. printf() will interpret the null bytes as the end of the
string.
In particular, MSVC's assert() will print wide characters by default,
and I can't find a way to disable it, leading to clang assertion
failures looking like:
FAILED: ...clang.exe ...
Aninja: build stopped: subcommand failed.
With this fix, I get the desired:
FAILED: ...clang.exe ...
Assertion failed: SymbolMap...
ninja: build stopped: subcommand failed.
void LinePrinter::PrintOnNewLine(const string& to_print) {
if (!have_blank_line_)
printf("\n");
- printf("%s", to_print.c_str());
+ if (!to_print.empty()) {
+ // Avoid printf and C strings, since the actual output might contain null
+ // bytes like UTF-16 does (yuck).
+ fwrite(&to_print[0], sizeof(char), to_print.size(), stdout);
+ }
have_blank_line_ = to_print.empty() || *to_print.rbegin() == '\n';
}