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An application encounters a runtime signal 11 when calling an
inline class method/function that uses a non-virtual thunk
(function descriptor stored in the TOC). Moving the method out
of the class to be non-inline avoids the problem. The inline
method could look like:
================================================================
class A : public B
virtual void mymethod() {}
================================================================
When the application runs, the signal 11 gives a stack
trace that ends in:
================================================================
non-virtual thunk to A::mymethod() at 0x900000000bec8b0
================================================================
The issue occurs when compiling with the -qminimaltoc option.
Local fix
Do not use -qminimaltoc
Problem summary
PROBLEM DESCRIPTION:
The offset generated by the compiler for loading the thunk
address from the TOC is not properly tagged as minimal toc,
therefore the value is incorrect and a signal 11 occurs.
USERS AFFECTED:
Users of virtual functions with -qminimaltoc
Problem conclusion
The offset genreation was corrected.
Temporary fix
Comments
APAR Information
APAR number
IJ13078
Reported component name
XL C/C++ FOR AI
Reported component ID
5725C7200
Reported release
G10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-01-29
Closed date
2019-03-20
Last modified date
2019-03-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
XL C/C++ FOR AI
Fixed component ID
5725C7200
Applicable component levels
RG10 PSY
UP
