Dominik Vogt <fvwm-workers@fvwm.org> writes:
> On Wed, Sep 18, 2002 at 10:30:52AM +0200, fvwm-workers wrote:
> [snip]
> > How about this: write a small test program that issues lots of
> > warnings with -Wall and AC_TRY_COMPILE it. When that fails,
> > configure bugs out with an error message.
>
> This is the test code I came up with. To the best of my
> knowledge, every ANSI C compiler should be able to compile it, but
> not without warnings:
Solaris 8 (yes, its an ANSI compiler):
fork> cc dominik.c
"dominik.c", line 6: left operand must be modifiable lvalue: op "="
"dominik.c", line 6: left operand must be modifiable lvalue: op "="
"dominik.c", line 11: warning: improper pointer/integer combination: op "="
"dominik.c", line 12: warning: assignment type mismatch:
pointer to char "=" const pointer to const int
cc: acomp failed for dominik.c
fork> cc -V
cc: Sun WorkShop 6 update 2 C 5.3 2001/05/15
HPUX11.11:
peterpan> cc dominik.c
cc: "dominik.c", line 6: error 1549: Modifiable lvalue required for assignment
operator.
cc: "dominik.c", line 6: error 1549: Modifiable lvalue required for assignment
operator.
cc: "dominik.c", line 11: warning 526: Pointer implicitly converted to integral
value in assignment.
cc: "dominik.c", line 12: warning 611: Qualifiers are not assignment-compatible.
peterpan> cc -V dominik.c
cpp.ansi: HP92453-01 B.11.11.02 HP C Preprocessor (ANSI)
ccom: HP92453-01 B.11.11.02 HP C Compiler
AIX 5.1:
dumbo> cc dominik.c
"dominik.c", line 6.18: 1506-068 (W) Operation between types "const int* const"
and "unsigned char" is not allowed.
"dominik.c", line 6.16: 1506-025 (S) Operand must be a modifiable lvalue.
"dominik.c", line 11.6: 1506-068 (W) Operation between types "unsigned char"
and "const int*" is not allowed.
"dominik.c", line 12.5: 1506-068 (W) Operation between types "unsigned char*"
and "const int* const" is not allowed.
dumbo> cc -V
VisualAge C++ Professional / C for AIX Compiler, Version 5
--
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