diff options
Diffstat (limited to 'src/preproc/html/pushback.cpp')
-rw-r--r-- | src/preproc/html/pushback.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/preproc/html/pushback.cpp b/src/preproc/html/pushback.cpp index 60ca9ff7..562669e7 100644 --- a/src/preproc/html/pushback.cpp +++ b/src/preproc/html/pushback.cpp @@ -71,6 +71,9 @@ pushBackBuffer::pushBackBuffer (char *filename) lineNo = 1; if (strcmp(filename, "") != 0) { stdIn = dup(0); + if (stdIn<0) { + sys_fatal("dup stdin"); + } close(0); if (open(filename, O_RDONLY) != 0) { sys_fatal("when trying to open file"); @@ -87,7 +90,9 @@ pushBackBuffer::~pushBackBuffer () } close(0); /* restore stdin in file descriptor 0 */ - dup(stdIn); + if (dup(stdIn)<0) { + sys_fatal("restore stdin"); + } close(stdIn); } |