diff options
Diffstat (limited to 'miniany/libc-freestanding.c')
| -rw-r--r-- | miniany/libc-freestanding.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/miniany/libc-freestanding.c b/miniany/libc-freestanding.c index 09d9fc8..31808e7 100644 --- a/miniany/libc-freestanding.c +++ b/miniany/libc-freestanding.c @@ -132,7 +132,11 @@ enum { static void print_char( int fd, int c ) { - char s[1]; + /* gcc 10 and 11 think on -O1 and -O2 that s can be held in registers, thus + * clobbering the output? Let's put a volatile here seems to help. Neither + * clang nor tcc show this behaviour.. + */ + volatile char s[1]; s[0] = c; syscall3( SYSCALL_WRITE, fd, (int)s, 1 ); } |