diff options
| -rw-r--r-- | sys/src/cmd/awk/run.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sys/src/cmd/awk/run.c b/sys/src/cmd/awk/run.c index 9af1b4b01..94918a29f 100644 --- a/sys/src/cmd/awk/run.c +++ b/sys/src/cmd/awk/run.c @@ -1706,6 +1706,7 @@ void stdinit(void) /* in case stdin, etc., are not constants */ files[1].fp = &stdout; files[2].fp = &stderr; } +#define writing(m) ((m) != LT && (m) != LE) Biobuf *openfile(int a, char *us) { @@ -1719,8 +1720,11 @@ Biobuf *openfile(int a, char *us) if (files[i].fname && strcmp(s, files[i].fname) == 0) { if (a == files[i].mode || (a==APPEND && files[i].mode==GT)) return files[i].fp; - if (a == FFLUSH) + if (a == FFLUSH) { + if(!writing(files[i].mode)) + return nil; return files[i].fp; + } } if (a == FFLUSH) /* didn't find it, so don't create it! */ return nil; @@ -1813,12 +1817,10 @@ void closeall(void) void flush_all(void) { int i; - for (i = 0; i < FOPEN_MAX; i++) - if (files[i].fp) + if (files[i].fp && writing(files[i].mode)) Bflush(files[i].fp); } - void backsub(char **pb_ptr, char **sptr_ptr); Cell *sub(Node **a, int) /* substitute command */ |