Re: [Qemu-devel] [PATCH v4 0/3] qapi: fix coding style in generated code

[Luiz Capitulino <lcapitulino@redhat.com>]

On Thu,  8 May 2014 09:14:37 +0800
Amos Kong <akong@redhat.com> wrote:

> Not a serious issue, but it's helpful if we can fix it.
> 
> V2: split change of scripts/qapi-visit.py to a split patch,
>     eat space by using a special char as Markus suggested
> V3: update commitlog, update special string, fix of adding
>     const replace string by pattern
> V4: fix pattern to cleanup special string (Paolo)
> 
> Amos Kong (3):
>   qapi: fix coding style in parameters list
>   qapi: add const prefix to 'char *' insider c_type()
>   qapi: Suppress unwanted space between type and identifier
> 
>  scripts/qapi-commands.py |  4 +---
>  scripts/qapi-visit.py    | 20 ++++++++++----------
>  scripts/qapi.py          | 18 ++++++++++++------
>  3 files changed, 23 insertions(+), 19 deletions(-)

Amos, it seems that this series breaks test-qmp-commands (trace below).

I'm not sure what is causing this and at first I thought your series was
only making an existing bug visible, but I took a quick look and it seems
that your last patch changes the code generator to drop the initialization
of generated types pointers in (generated) qmp commands.

Can you please investigate this? And also, please, carry Reviewed-bys
of unmodified patches and address Eric's comments if you respin.

$ make check
[...]
GTESTER tests/test-qmp-commands
*** Error in `tests/test-qmp-commands': free(): invalid pointer: 0x00007f8a2fef3030 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x3926875cff)[0x7f8a2d421cff]
/lib64/libc.so.6(+0x392687cff8)[0x7f8a2d428ff8]
/lib64/libglib-2.0.so.0(g_free+0xf)[0x7f8a2e616f7f]
tests/test-qmp-commands(+0x2b267)[0x7f8a2ef4b267]
tests/test-qmp-commands(+0x2a3fb)[0x7f8a2ef4a3fb]
tests/test-qmp-commands(+0x262ca)[0x7f8a2ef462ca]
tests/test-qmp-commands(+0x2633b)[0x7f8a2ef4633b]
tests/test-qmp-commands(+0x26494)[0x7f8a2ef46494]
tests/test-qmp-commands(+0x29f73)[0x7f8a2ef49f73]
tests/test-qmp-commands(+0x2d2ac)[0x7f8a2ef4d2ac]
tests/test-qmp-commands(+0x2d3de)[0x7f8a2ef4d3de]
tests/test-qmp-commands(+0x291ee)[0x7f8a2ef491ee]
/lib64/libglib-2.0.so.0(+0x392946d5e1)[0x7f8a2e6355e1]
/lib64/libglib-2.0.so.0(+0x392946d7a6)[0x7f8a2e6357a6]
/lib64/libglib-2.0.so.0(g_test_run_suite+0x17b)[0x7f8a2e635b1b]
tests/test-qmp-commands(main+0x9a)[0x7f8a2ef49bac]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7f8a2d3cdd65]
tests/test-qmp-commands(+0x4499)[0x7f8a2ef24499]
======= Memory map: ========
7f8a2d3ac000-7f8a2d560000 r-xp 00000000 fd:00 551385                     /usr/lib64/libc-2.18.so
7f8a2d560000-7f8a2d760000 ---p 001b4000 fd:00 551385                     /usr/lib64/libc-2.18.so
7f8a2d760000-7f8a2d764000 r--p 001b4000 fd:00 551385                     /usr/lib64/libc-2.18.so
7f8a2d764000-7f8a2d766000 rw-p 001b8000 fd:00 551385                     /usr/lib64/libc-2.18.so
7f8a2d766000-7f8a2d76b000 rw-p 00000000 00:00 0 
7f8a2d76b000-7f8a2d783000 r-xp 00000000 fd:00 530647                     /usr/lib64/libpthread-2.18.so
7f8a2d783000-7f8a2d982000 ---p 00018000 fd:00 530647                     /usr/lib64/libpthread-2.18.so
7f8a2d982000-7f8a2d983000 r--p 00017000 fd:00 530647                     /usr/lib64/libpthread-2.18.so
7f8a2d983000-7f8a2d984000 rw-p 00018000 fd:00 530647                     /usr/lib64/libpthread-2.18.so
7f8a2d984000-7f8a2d988000 rw-p 00000000 00:00 0 
7f8a2d988000-7f8a2d99d000 r-xp 00000000 fd:00 551415                     /usr/lib64/libgcc_s-4.8.2-20131212.so.1
7f8a2d99d000-7f8a2db9c000 ---p 00015000 fd:00 551415                     /usr/lib64/libgcc_s-4.8.2-20131212.so.1
7f8a2db9c000-7f8a2db9d000 r--p 00014000 fd:00 551415                     /usr/lib64/libgcc_s-4.8.2-20131212.so.1
7f8a2db9d000-7f8a2db9e000 rw-p 00015000 fd:00 551415                     /usr/lib64/libgcc_s-4.8.2-20131212.so.1
7f8a2db9e000-7f8a2dca3000 r-xp 00000000 fd:00 569400                     /usr/lib64/libm-2.18.so
7f8a2dca3000-7f8a2dea3000 ---p 00105000 fd:00 569400                     /usr/lib64/libm-2.18.so
7f8a2dea3000-7f8a2dea4000 r--p 00105000 fd:00 569400                     /usr/lib64/libm-2.18.so
7f8a2dea4000-7f8a2dea5000 rw-p 00106000 fd:00 569400                     /usr/lib64/libm-2.18.so
7f8a2dea5000-7f8a2df8e000 r-xp 00000000 fd:00 569411                     /usr/lib64/libstdc++.so.6.0.19
7f8a2df8e000-7f8a2e18e000 ---p 000e9000 fd:00 569411                     /usr/lib64/libstdc++.so.6.0.19
7f8a2e18e000-7f8a2e196000 r--p 000e9000 fd:00 569411                     /usr/lib64/libstdc++.so.6.0.19
7f8a2e196000-7f8a2e198000 rw-p 000f1000 fd:00 569411                     /usr/lib64/libstdc++.so.6.0.19
7f8a2e198000-7f8a2e1ad000 rw-p 00000000 00:00 0 
7f8a2e1ad000-7f8a2e1b1000 r-xp 00000000 fd:00 535852                     /usr/lib64/libuuid.so.1.3.0
7f8a2e1b1000-7f8a2e3b0000 ---p 00004000 fd:00 535852                     /usr/lib64/libuuid.so.1.3.0
7f8a2e3b0000-7f8a2e3b1000 r--p 00003000 fd:00 535852                     /usr/lib64/libuuid.so.1.3.0
7f8a2e3b1000-7f8a2e3b2000 rw-p 00004000 fd:00 535852                     /usr/lib64/libuuid.so.1.3.0
7f8a2e3b2000-7f8a2e3c7000 r-xp 00000000 fd:00 551391                     /usr/lib64/libz.so.1.2.8
7f8a2e3c7000-7f8a2e5c6000 ---p 00015000 fd:00 551391                     /usr/lib64/libz.so.1.2.8
7f8a2e5c6000-7f8a2e5c7000 r--p 00014000 fd:00 551391                     /usr/lib64/libz.so.1.2.8
7f8a2e5c7000-7f8a2e5c8000 rw-p 00015000 fd:00 551391                     /usr/lib64/libz.so.1.2.8
7f8a2e5c8000-7f8a2e6f1000 r-xp 00000000 fd:00 535571                     /usr/lib64/libglib-2.0.so.0.3800.2
7f8a2e6f1000-7f8a2e8f1000 ---p 00129000 fd:00 535571                     /usr/lib64/libglib-2.0.so.0.3800.2
7f8a2e8f1000-7f8a2e8f2000 r--p 00129000 fd:00 535571                     /usr/lib64/libglib-2.0.so.0.3800.2
7f8a2e8f2000-7f8a2e8f3000 rw-p 0012a000 fd:00 535571                     /usr/lib64/libglib-2.0.so.0.3800.2
7f8a2e8f3000-7f8a2e8f4000 rw-p 00000000 00:00 0 
7f8a2e8f4000-7f8a2e8f5000 r-xp 00000000 fd:00 551438                     /usr/lib64/libgthread-2.0.so.0.3800.2
7f8a2e8f5000-7f8a2eaf4000 ---p 00001000 fd:00 551438                     /usr/lib64/libgthread-2.0.so.0.3800.2
7f8a2eaf4000-7f8a2eaf5000 r--p 00000000 fd:00 551438                     /usr/lib64/libgthread-2.0.so.0.3800.2
7f8a2eaf5000-7f8a2eaf6000 rw-p 00001000 fd:00 551438                     /usr/lib64/libgthread-2.0.so.0.3800.2
7f8a2eaf6000-7f8a2eafd000 r-xp 00000000 fd:00 531444                     /usr/lib64/librt-2.18.so
7f8a2eafd000-7f8a2ecfc000 ---p 00007000 fd:00 531444                     /usr/lib64/librt-2.18.so
7f8a2ecfc000-7f8a2ecfd000 r--p 00006000 fd:00 531444                     /usr/lib64/librt-2.18.so
7f8a2ecfd000-7f8a2ecfe000 rw-p 00007000 fd:00 531444                     /usr/lib64/librt-2.18.so
7f8a2ecfe000-7f8a2ed1e000 r-xp 00000000 fd:00 551384                     /usr/lib64/ld-2.18.so
7f8a2eefa000-7f8a2ef02000 rw-p 00000000 00:00 0 
7f8a2ef1b000-7f8a2ef1d000 rw-p 00000000 00:00 0 
7f8a2ef1d000-7f8a2ef1e000 r--p 0001f000 fd:00 551384                     /usr/lib64/ld-2.18.so
7f8a2ef1e000-7f8a2ef1f000 rw-p 00020000 fd:00 551384                     /usr/lib64/ld-2.18.so
7f8a2ef1f000-7f8a2ef20000 rw-p 00000000 00:00 0 
7f8a2ef20000-7f8a2ef65000 r-xp 00000000 fd:04 282340                     /home/lcapitulino/work/src/upstream/qmp-unstable/build/tests/test-qmp-commands
7f8a2f165000-7f8a2f166000 r--p 00045000 fd:04 282340                     /home/lcapitulino/work/src/upstream/qmp-unstable/build/tests/test-qmp-commands
7f8a2f166000-7f8a2f167000 rw-p 00046000 fd:04 282340                     /home/lcapitulino/work/src/upstream/qmp-unstable/build/tests/test-qmp-commands
7f8a2fef0000-7f8a2ff11000 rw-p 00000000 00:00 0                          [heap]
7fffc9896000-7fffc98b8000 rw-p 00000000 00:00 0                          [stack]
7fffc98cd000-7fffc98cf000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
GTester: last random seed: R02S53adc33aac3bcdb0168c5aa5f74a577d
make: *** [check-tests/test-qmp-commands] Error 1