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Fix a exception during De-Serialize #8

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vishwabmc opened this issue Oct 11, 2017 · 5 comments
Open

Fix a exception during De-Serialize #8

vishwabmc opened this issue Oct 11, 2017 · 5 comments

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@vishwabmc
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While trying to De-Serialize a Non-versioned Cereal object from a versioned Cereal code, saw that it raised std::length_error exception as opposed to a CerealException and that is indicating an issue in the code that handles the vectors. May be association ?

terminate called after throwing an instance of 'std::length_error'
  what():  vector::_M_default_append

See : USCiLab/cereal#192
@ghost
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ghost commented Mar 25, 2018

I have a similar issue but with a value error.

ValueError: vector::_M_default_append

@vishwabmc Have you solved this ?

@michalglen
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michalglen commented May 16, 2019 •
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Hi all,
I also have the same issue when trying to deserialize using Cereal
terminate called after throwing an instance of 'std::length_error' what(): vector::_M_default_append
@vishwabmc @zaouch
Did you manage to fix it?

@guozhizou
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Got exactly the same issue, any solutions?

@spinler
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spinler commented Sep 11, 2019

@guozhizou This happened in phosphor-logging code?

@guozhizou
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Not phosphor-logging but similar situation with USCiLab/cereal#192

geissonator pushed a commit that referenced this issue Oct 1, 2024
@williamspatrick
openpower-pels: fru-identity: fix crash in setPartNumber
66f3675 
On newer libstdc++ implementations, the following backtrace is
observed:

```
 #2  0x00007ffff7a578b7 in abort () from /usr/lib64/libc.so.6
 #3  0x00007ffff7cda2af in std::__glibcxx_assert_fail(char const*, int, char const*, char const*) () from /usr/lib/gcc/x86_64-pc-linux-gnu/14/libstdc++.so.6
 #4  0x000055555556ac6f in std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::front (this=0x7fffffffd790) at /usr/lib/gcc/x86_64-pc-linux-gnu/13/include/g++-v13/bits/basic_string.h:1315
 #5  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::front (this=0x7fffffffd790) at /usr/lib/gcc/x86_64-pc-linux-gnu/13/include/g++-v13/bits/basic_string.h:1315
 #6  openpower::pels::src::FRUIdentity::setPartNumber (this=this@entry=0x7fffffffd8a0, partNumber="") at ../extensions/openpower-pels/fru_identity.cpp:216
 #7  0x000055555556ae12 in openpower::pels::src::FRUIdentity::FRUIdentity (this=this@entry=0x7fffffffd8a0, partNumber="", ccin="", serialNumber="") at ../extensions/openpower-pels/fru_identity.cpp:102
 #8  0x0000555555562aaf in testHWCallout (pn="", ccin="", sn="", expectedPN="", expectedCCIN="", expectedSN="") at ../test/openpower-pels/fru_identity_test.cpp:97
 #9  0x00005555555645b0 in FRUIdentityTest_CreateHardwareCalloutTest_Test::TestBody (this=<optimized out>) at /usr/lib/gcc/x86_64-pc-linux-gnu/13/include/g++-v13/bits/basic_string.tcc:242
```

Fix this by avoiding accessing `front()` when the part number string
is empty.  While there, do a minor performance optimization to avoid
unnecessary string copies, by using `erase` instead of `substr`.

Signed-off-by: Patrick Williams <[email protected]>
Change-Id: I71cc195596def6ad0cd982e7294e2467beee987c
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4 participants
@michalglen @guozhizou @spinler @vishwabmc