diff options
Diffstat (limited to 'libc/src/stdio/generic/vfprintf.cpp')
| -rw-r--r-- | libc/src/stdio/generic/vfprintf.cpp | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/libc/src/stdio/generic/vfprintf.cpp b/libc/src/stdio/generic/vfprintf.cpp index 01f4265..a26f082 100644 --- a/libc/src/stdio/generic/vfprintf.cpp +++ b/libc/src/stdio/generic/vfprintf.cpp @@ -8,9 +8,12 @@ #include "src/stdio/vfprintf.h" +#include "src/__support/CPP/limits.h" #include "src/__support/File/file.h" #include "src/__support/arg_list.h" #include "src/__support/macros/config.h" +#include "src/stdio/printf_core/core_structs.h" +#include "src/stdio/printf_core/error_mapper.h" #include "src/stdio/printf_core/vfprintf_internal.h" #include "hdr/types/FILE.h" @@ -24,8 +27,18 @@ LLVM_LIBC_FUNCTION(int, vfprintf, internal::ArgList args(vlist); // This holder class allows for easier copying // and pointer semantics, as well as handling // destruction automatically. - int ret_val = printf_core::vfprintf_internal(stream, format, args); - return ret_val; + auto ret_val = printf_core::vfprintf_internal(stream, format, args); + if (!ret_val.has_value()) { + libc_errno = printf_core::internal_error_to_errno(ret_val.error()); + return -1; + } + if (ret_val.value() > static_cast<size_t>(cpp::numeric_limits<int>::max())) { + libc_errno = + printf_core::internal_error_to_errno(-printf_core::OVERFLOW_ERROR); + return -1; + } + + return static_cast<int>(ret_val.value()); } } // namespace LIBC_NAMESPACE_DECL |