Date: Sun, 10 Mar 2024 00:24:16 -0800 From: "Jin Guojun[VFF]" <jguojun@gmail.com> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: weird compiler error in 13.3-R Message-ID: <4d6edaa6-237d-4207-9047-ddee78ee4b90@gmail.com>
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Updated 13.2 to 13.3 and get a weird compiling failure. The code
compiled since FreeBSD release 4 till release 13.2.
Both ap (line 119) and vap (line 126) are declared as va_list, somehow
clang version 17.0.6 thinks va_list at line 119 is uint,
where va_list in line 126 is 'struct __va_list_tag *'.
Checked /usr/include and va_list is declared in
/usr/include/sys/_stdarg.h:39: typedef __va_list va_list;
included by /usr/include/stdarg.h via x86/stdarg.h
Does anyone have ideas on what could cause such compiling failure?
-Jin
10 #include <stdarg.h>
11 #include <stdio.h>
118 struct a_build_ctrl_t {
119 va_list ap; /* what is different from vap
at line 126? */
120 argu_type last_arg_t;
121 };
124
125 arg_fmt_lists*
126 build_arg_fmt_list(arg_fmt_list_string* fmt, va_list vap)
127 {
128 int na=1;
129
130 arg_fmt_lists* aflp;
131 arg_fmt_lists* aflp_top;
132
133 struct a_build_ctrl_t abc = {.ap=vap,
.last_arg_t=ARGU_NONE};
...
}
test.c:133:34: error: incompatible pointer to integer conversion
initializing 'unsigned int' with an expression of type 'struct
__va_list_tag *' [-Wint-conversion]
133 | struct a_build_ctrl_t abc = {.ap=vap, .last_arg_t=ARGU_NONE};
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