diff options
| -rw-r--r-- | compiler-rt/lib/sanitizer_common/sanitizer_printf.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_printf.cc b/compiler-rt/lib/sanitizer_common/sanitizer_printf.cc index f1fb2b1fe3a..b49cf77a8bc 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_printf.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_printf.cc @@ -192,6 +192,8 @@ static void CallPrintfAndReportCallback(const char *str) { static void SharedPrintfCode(bool append_pid, const char *format, va_list args) { + va_list args2; + va_copy(args2, args); const int kLen = 16 * 1024; // |local_buffer| is small enough not to overflow the stack and/or violate // the stack limit enforced by TSan (-Wframe-larger-than=512). On the other @@ -205,6 +207,8 @@ static void SharedPrintfCode(bool append_pid, const char *format, // mmaped buffer. for (int use_mmap = 0; use_mmap < 2; use_mmap++) { if (use_mmap) { + va_end(args); + va_copy(args, args2); buffer = (char*)MmapOrDie(kLen, "Report"); buffer_size = kLen; } @@ -235,6 +239,7 @@ static void SharedPrintfCode(bool append_pid, const char *format, // If we had mapped any memory, clean up. if (buffer != local_buffer) UnmapOrDie((void *)buffer, buffer_size); + va_end(args2); } void Printf(const char *format, ...) { |
