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uninitialized variable warnings in frame/util/norm1m/bli_norm1m_unb_var1.c #5

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jeffhammond opened this issue Mar 31, 2014 · 2 comments
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uninitialized variable warnings in frame/util/norm1m/bli_norm1m_unb_var1.c #5

jeffhammond opened this issue Mar 31, 2014 · 2 comments

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@jeffhammond
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While perhaps innocuous, such compiler warnings are not ideal...

frame/util/norm1m/bli_norm1m_unb_var1.c: In function 'bli_znorm1m_unb_var1':
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'ij0' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'n_shift' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c: In function 'bli_cnorm1m_unb_var1':
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'ij0' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'n_shift' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c: In function 'bli_dnorm1m_unb_var1':
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'ij0' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'n_shift' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c: In function 'bli_snorm1m_unb_var1':
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'ij0' may be used uninitialized in this function
frame/util/norm1m/bli_norm1m_unb_var1.c:230: warning: 'n_shift' may be used uninitialized in this function
@fgvanzee
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fgvanzee commented Apr 1, 2014

What version of gcc are you using? I can't reproduce with 4.8.2.

In any event, try pulling 47a90e6 and let me know if the warnings persist.

@jeffhammond
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I was using 10 machines at the time I saw this and cannot remember where I saw it. I'll close for now and reopen if I see it again. I'm updating regularly from git so I will see the potential fix if that's what you pushed.

@songmaotian songmaotian mentioned this issue Apr 22, 2016
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@heroxbd heroxbd mentioned this issue Feb 20, 2017
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@loveshack loveshack mentioned this issue Mar 5, 2018
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@loveshack loveshack mentioned this issue Apr 5, 2018
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loveshack pushed a commit to loveshack/blis that referenced this issue Sep 24, 2019
Kludge to fix cpuid dispatch on power
850f4d1 
This needs fixing properly somehow, but using -O3 (at least with gcc 8.3),
we get this:

Program received signal SIGILL, Illegal instruction.
0x000000001004c660 in bli_cntx_init_power9_ref (cntx=0x103e06b0)
    at ref_kernels/bli_cntx_ref.c:456
456             for ( i = 0; i < BLIS_NUM_LEVEL3_OPS; ++i ) vfuncs[ i ] = NULL;
(gdb) bt
#0  0x000000001004c660 in bli_cntx_init_power9_ref (cntx=0x103e06b0)
    at ref_kernels/bli_cntx_ref.c:456
flame#1  0x000000001004c0a8 in bli_cntx_init_power9 (cntx=<optimized out>)
    at config/power9/bli_cntx_init_power9.c:42
flame#2  0x000000001003c85c in bli_gks_register_cntx (id=BLIS_ARCH_POWER9,
    nat_fp=0x1004c090 <bli_cntx_init_power9>,
    ref_fp=0x1004c0d0 <bli_cntx_init_power9_ref>, ind_fp=<optimized out>)
    at frame/base/bli_gks.c:373
flame#3  0x000000001003c97c in bli_gks_init () at frame/base/bli_gks.c:155
flame#4  0x000000001003cfe8 in bli_init_apis () at frame/base/bli_init.c:78
flame#5  0x00007ffff7e045a8 in __pthread_once_slow () from /lib64/libpthread.so.0
flame#6  0x00000000100492e8 in bli_pthread_once (once=<optimized out>,
    init=<optimized out>) at frame/thread/bli_pthread.c:314
flame#7  0x000000001003d138 in bli_init_once () at frame/base/bli_init.c:104
flame#8  bli_init_auto () at frame/base/bli_init.c:54
flame#9  0x0000000010011300 in cdotc_ (n=<optimized out>, x=<optimized out>,
    incx=<optimized out>, y=<optimized out>, incy=<optimized out>)
    at frame/compat/bla_dot.c:89
flame#10 0x0000000010002a48 in check2_ (sfac=0x103d14dc <sfac>)
    at blastest/src/cblat1.c:529
flame#11 0x0000000010001ef4 in main () at blastest/src/cblat1.c:112
niyas-sait pushed a commit to niyas-sait/blis that referenced this issue Feb 25, 2022
@isuruf @honnibal
Use expert interface for blis functions (flame#5)
33e348b
@RajalakshmiSR RajalakshmiSR mentioned this issue Mar 24, 2022
Closed
Aaron-Hutchinson referenced this issue in sifive/sifive-blis Apr 4, 2023
@myeh01 @Aaron-Hutchinson
Add {d,c,z}gemm microkernels (#5)
4a2bc83
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2 participants
@jeffhammond @fgvanzee