I have a file that I would like to be able to either execute with a C
interpreter, or compile with GCC.
As you know, Unix uses "#!/path/to/interpreter" to invoke scripts. Consider
the following program:
#!/usr/bin/c-interpreter
int main() { printf("Hello World\n"); }
It would be nice if this could be compiled by GCC, simple by ignoring the first
line of the file. The current error message is:
hello.c:1:2: error: invalid preprocessing directive #!
One easy fix would be to define the preprocessing directive #! as a legal
directive, which swallows the rest of the line. This would work with C, C++,
and ObjC, but not the other languages. Another possibility that would work
universally is to make #! as the first two characters of an input file a
"special case" comment specifier in all front-ends. It doesn't need to be
recognized anywhere except as the first two bytes of a file.
Please consider this small but useful feature as it will help me with writing
portable code that can be interpreted as well as compiled.
--
Summary: Please ignore #! on the first line of a file
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: drwowe at yahoo dot com
GCC build triplet: All
GCC host triplet: All
GCC target triplet: All
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41492
