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[Qemu-devel] [Bug 1801073] Re: util/zbin.c:390:37: error: absolute value


From: Martin Liska
Subject: [Qemu-devel] [Bug 1801073] Re: util/zbin.c:390:37: error: absolute value function 'abs' given an argument of type 'long int' but has parameter of type 'int' which may cause truncation of value [-Werror=absolute-value]
Date: Mon, 21 Jan 2019 09:41:24 -0000

Thank you, I contacted IPXE folks.

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https://bugs.launchpad.net/bugs/1801073

Title:
  util/zbin.c:390:37: error: absolute value function 'abs' given an
  argument of type 'long int' but has parameter of type 'int' which may
  cause truncation of value [-Werror=absolute-value]

Status in QEMU:
  New

Bug description:
  For qemu-3.0.0 I see with GCC 9 compiler a new warning:

  $ make -j1 -C roms pxerom VERBOSE=1 V=1
  make: Entering directory '/home/abuild/rpmbuild/BUILD/qemu-3.0.0/roms'
  make -C ipxe/src CONFIG=qemu \
        PACKAGING_TIMESTAMP=1534273834 \
        CROSS_COMPILE= \
        bin/8086100e.rom bin/808610d3.rom bin/80861209.rom bin/10500940.rom 
bin/10222000.rom bin/10ec8139.rom bin/1af41000.rom bin/15ad07b0.rom
  make[1]: Entering directory 
'/home/abuild/rpmbuild/BUILD/qemu-3.0.0/roms/ipxe/src'
  gcc  -Wall -W -Wformat-nonliteral -O2 -g -Werror util/zbin.c -llzma -o 
util/zbin
  util/zbin.c: In function 'process_zinfo_add':
  util/zbin.c:390:37: error: absolute value function 'abs' given an argument of 
type 'long int' but has parameter of type 'int' which may cause truncation of 
value [-Werror=absolute-value]
    390 |      ( ( addend < 0 ) ? "-" : "" ), abs ( addend ), size,
        |                                     ^~~
  util/zbin.c:398:37: error: absolute value function 'abs' given an argument of 
type 'long int' but has parameter of type 'int' which may cause truncation of 
value [-Werror=absolute-value]
    398 |      ( ( addend < 0 ) ? "-" : "" ), abs ( addend ), size,
        |                                     ^~~
  util/zbin.c:419:37: error: absolute value function 'abs' given an argument of 
type 'long int' but has parameter of type 'int' which may cause truncation of 
value [-Werror=absolute-value]
    419 |      ( ( addend < 0 ) ? "-" : "" ), abs ( addend ),
        |                                     ^~~
  cc1: all warnings being treated as errors
  make[1]: *** [Makefile.housekeeping:1368: util/zbin] Error 1

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