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From: rfg@MCC.COM (Ron Guilmette)
Newsgroups: gnu.gcc.bug
Subject: manual clarification needed
Message-ID: <8904281801.AA07198@riunite.aca.mcc.com>
Date: 28 Apr 89 18:01:15 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 37


Section 5.10 of the GCC manual should point out that non-constant
aggregate initializers are allowed only for variables whose storage
class is "auto".  For anybody who knows generally how initialization
is done in C this is not needed, but other neophytes might find the
clarification helpful.

Ana example source file and error message are given below to help
illustrate what specifically is prohibited.

Note that the error message issued is somewhat inaccurate because
the variable in question is *not* declared such that its name has "static"
linkage (even though it is obvious that the variable's *storage class*
is "static").

----------------------------------------------------------------------
struct s {
	int i;
	float f;
};

int j;
float g;

struct s s_global_variable = { j, g };
----------------------------------------------------------------------
gcc version 1.34.1
 /usr/local/src/lib/sun3/gcc-1.34.1/gcc-cpp -v -undef -D__GNUC__ -Dmc68000 -Dsun -Dunix -D__mc68000__ -D__sun__ -D__unix__ -D__HAVE_68881__ -Dmc68020 test.c /tmp/cca07170.cpp
GNU CPP version 1.34.1
 /usr/local/src/lib/sun3/gcc-1.34.1/gcc-cc1 /tmp/cca07170.cpp -quiet -dumpbase test.c -version -o test.s
GNU C version 1.34.1 (68k, MIT syntax) compiled by GNU C version 1.34.1.
test.c:9: initializer for static variable is not constant

// Ron Guilmette  -  MCC  -  Experimental Systems Kit Project
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