#1560: Windows CreateProcess quotes bug; make re-executing itself fails
+---
Reporter: igloo | Owner:
Type: bug| Status: new
Priority: high | Milestone: 6.8
Component: libraries (other) |Version: 6.6.1
Severity: normal | Keywords:
Difficulty: Unknown| Os: Windows
Testcase: | Architecture: Unknown
+---
Something very odd is going on with the way we run other programs on
Windows (msys/mingw).
The following session shows that, regardless of whether or not we put
quotes around the program we want to run when calling `CreateProcess`,
there are no quotes in `argv[0]`. However, when make comes to reinvoke
itself (after building any 'include'ed Makefiles) it has managed to find
the quotes and fails to execute '"make"'.
This should be fairly easy to debug, except I cannot build the make that
it is using.
The failure is shown even further down.
The re-execution happens around line 1934 in the source I have:
{{{
char **p;
fputs (_("Re-executing:"), stdout);
for (p = nargv; *p != 0; ++p)
printf (" %s", *p);
putchar ('\n');
}}}
If anyone can work out where the quotes come from, can make a small
program that exhibits the same problem or has any idea what the problem
with building make is, then please let me know!
Thanks
Ian
{{{
$ gcc --version
gcc.exe (GCC) 3.4.2 (mingw-special)
Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
$ make --version
GNU Make version 3.79.1, by Richard Stallman and Roland McGrath.
Built for i686-pc-msys
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Report bugs to <[EMAIL PROTECTED]>.
$ cat Makefile
.PHONY: foo
foo:
echo hello $(VAR) world
rm -f include.Makefile
include include.Makefile
include.Makefile:
echo "VAR=val" > $@
$ cat show_args.c
#include
int main(int argc, char *argv[]) {
int i;
printf("argc = %d\n", argc);
for (i = 0; i < argc; i++) {
printf("argv[%d] = %s\n", i, argv[i]);
}
return 0;
}
$ cat test.c
#include
#include
int foo(char *cmdline) {
int r;
int flags = 0;
void *environment = NULL;
void *workingDirectory = NULL;
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
ZeroMemory(&pi, sizeof(pi));
printf("\n");
printf("*** cmdline = %s\n", cmdline);
fflush(stdout);
r = CreateProcess(NULL, cmdline, NULL, NULL, TRUE, flags, environment,
workingDirectory, &si, &pi);
printf("*** r = %d\n", r);
fflush(stdout);
WaitForSingleObject(pi.hProcess, INFINITE);
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
}
int main(int argc, char *argv[]) {
foo("./show_args a b c");
foo("\"./show_args\" a b c");
foo("make -dr");
foo("\"make\" -dr");
return 0;
}
$ gcc show_args.c -o show_args
$ gcc test.c -o test
$ ./test.exe
*** cmdline = ./show_args a b c
*** r = 1
argc = 4
argv[0] = ./show_args
argv[1] = a
argv[2] = b
argv[3] = c
*** cmdline = "./show_args" a b c
*** r = 1
argc = 4
argv[0] = ./show_args
argv[1] = a
argv[2] = b
argv[3] = c
*** cmdline = make -dr
*** r = 1
GNU Make version 3.79.1, by Richard Stallman and Roland McGrath.
Built for i686-pc-msys
Copyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Report bugs to <[EMAIL PROTECTED]>.
Reading makefiles...
Reading makefile `Makefile'...
Reading makefile `include.Makefile' (search path) (no ~ expansion)...
Makefile:7: include.Makefile: No such file or directory
Updating makefiles
Considering target file `include.Makefile'.
File `include.Makefile' does not exist.
Finished prerequisites of target file `include.Makefile'.
Must remake target `include.Makefile'.
echo "VAR=val" > include.Makefile
Putting child 0x0a0158b0 (include.Makefile) PID 2476 on the chain.
Live child 0x
