Hi Grischka,
Clang reports the following warnings with your new c2str.c source file
(found with RPi4 arm and other platforms using clang):
clang -o c2str.exe tests/misc/c2str.c && ./c2str.exe include/tccdefs.h
tccdefs_.h
tests/misc/c2str.c:58:19: warning: passing 'unsigned char *' to parameter of
type 'char *' converts between pointers to integer types with
different
sign [-Wpointer-sign]
if (fgets(p, sizeof l - (p - l), fp)) {
^
/usr/include/stdio.h:570:38: note: passing argument to parameter '__s' here
extern char *fgets (char *__restrict __s, int __n, FILE *__restrict
__stream)
^
tests/misc/c2str.c:59:24: warning: passing 'unsigned char *' to parameter of
type 'const char *' converts between pointers to integer types with
different sign [-Wpointer-sign]
p = strchr(p, 0);
^
/usr/include/string.h:225:34: note: passing argument to parameter '__s' here
extern char *strchr (const char *__s, int __c)
^
tests/misc/c2str.c:59:15: warning: assigning to 'unsigned char *' from 'char
*'
converts between pointers to integer types with different sign
[-Wpointer-sign]
p = strchr(p, 0);
^ ~~~~~~~~~~~~
tests/misc/c2str.c:87:68: warning: data argument not used by format string
[-Wformat-extra-args]
fprintf(op, " (converted, do not edit this file)", l);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
tests/misc/c2str.c:92:28: warning: passing 'unsigned char [1000]' to
parameter
of type 'const char *' converts between pointers to integer types with
different sign [-Wpointer-sign]
p = strchr(l, 0);
^
/usr/include/string.h:225:34: note: passing argument to parameter '__s' here
extern char *strchr (const char *__s, int __c)
^
tests/misc/c2str.c:92:19: warning: assigning to 'unsigned char *' from 'char
*'
converts between pointers to integer types with different sign
[-Wpointer-sign]
p = strchr(l, 0);
^ ~~~~~~~~~~~~
tests/misc/c2str.c:110:43: warning: passing 'unsigned char *' to parameter
of
type 'char *' converts between pointers to integer types with
different
sign [-Wpointer-sign]
q = strchr(strcpy(q, platform_macros[f + 1]), 0);
^
/usr/include/string.h:121:39: note: passing argument to parameter '__dest'
here
extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
^
tests/misc/c2str.c:110:27: warning: assigning to 'unsigned char *' from
'char *'
converts between pointers to integer types with different sign
[-Wpointer-sign]
q = strchr(strcpy(q, platform_macros[f + 1]), 0);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 warnings generated.
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