Re: [fpc-devel] Is this a compiler bug ?

[Jonas Maebe]

On 27 Sep 2012, at 15:05, ik wrote:


The Compiler display two warnings and then it report them as 2 errors.

I'm using Free Pascal Compiler version 2.6.0 [2012/05/17] for x86_64
that arrives with Arch-Linux

Is this a bug of the compiler (reporting errors as warnings), a bug in
the code itself, or something else ?


The compiler makefile passes the -Sew option to the compiler, which  
instructs it to treat all warnings as errors. As documented at http://wiki.freepascal.org/FPC_JVM/Building#Building_the_compiler_and_RTL 
 , you currently have to pass ALLOW_WARNINGS=1 to make in order to  
build the jvm compiler.



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RE: [fpc-devel] Is this a compiler bug ?

[Pierre Free Pascal]

 -Message d'origine-
 De : fpc-devel-boun...@lists.freepascal.org [mailto:fpc-devel-
 boun...@lists.freepascal.org] De la part de ik
 Envoyé : jeudi 27 septembre 2012 15:05
 À : FPC developers' list
 Objet : [fpc-devel] Is this a compiler bug ?
 
 Hello,
 
 While trying to compile FPC r22471:
 make CROSSOPT=-O2 -g -FD/usr/share/java/  CPU_TARGET=jvm
 OS_TARGET=android INSTALL_PREFIX=/usr/ FPC=/usr/bin/ppcx64  all
 zipinstall
 
 I get the following message:
 
 
 /home/ik/projects/foss/fpc/fpc/compiler/ppc -Ur -Xs -O2 -n -Fujvm
 -Fusystems -Fu/home/ik/projects/foss/fpc/fpc/rtl/units/x86_64-linux
 -Fijvm -FE. -FUjvm/units/x86_64-linux -Cg -dRELEASE   -djvm -dGDB
 -dBROWSERLOG -Fujvm -dNOOPT -Sew pp.pas
 hlcgcpu.pas(2392,28) Warning: Constructing a class thlcgjvm with
 abstract method g_overflowcheck
 hlcgcpu.pas(2392,28) Warning: Constructing a class thlcgjvm with
 abstract method g_overflowCheck_loc
 hlcgcpu.pas(2397) Fatal: There were 2 errors compiling module, stopping
 
 
 The Compiler display two warnings and then it report them as 2 errors.
 
 I'm using Free Pascal Compiler version 2.6.0 [2012/05/17] for x86_64
 that arrives with Arch-Linux
 
 Is this a bug of the compiler (reporting errors as warnings), a bug in
 the code itself, or something else ?
  It is a feature of both the compiler capabilities itself
and of the fact that we consider that correct code should not generate
warnings.
  -Sew is the option that transforms any warning into an error
it is a feature of the compiler that is used by default
when cycling (In the sense do a 'make cycle') the compiler.
  For java target it is known that there are warnings left,
but you can still use the Makefiles by adding
  ALLOW_WARNINGS=1 to the 'make cycle' command line.

Pierre Muller
... who's responsible for adding -Sew to the default compiler cycling!



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