libc-stdio: fix standard streams with libstdc++

1 files changed, 15 insertions, 0 deletions

diff --git a/src/libc-stdio.c b/src/libc-stdio.c
index 34fe40d..0d19f20 100644
--- a/src/libc-stdio.c
+++ b/src/libc-stdio.c
@@ -28,12 +28,27 @@ bionic_file_to_glibc_file(FILE *f)
    return f;
 }
 
+// libstdc++ uses these directly for standard streams, thus we need to wrap em
+// and IO_file wraps aren't enough.
+
 int
 bionic_fflush(FILE *f)
 {
    return fflush(bionic_file_to_glibc_file(f));
 }
 
+size_t
+bionic_fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+   return fwrite(ptr, size, nmemb, bionic_file_to_glibc_file(stream));
+}
+
+int
+bionic_putc(int ch, FILE *f)
+{
+   return putc(ch, bionic_file_to_glibc_file(f));
+}
+
 // Wrapping internal glibc VTABLE functions to handle bionic's pre-M crap
 // We define __real_IO_file_xsputn in libc.c so linker will link our library,
 // it's not used however for anything.