Eric Postpischil

Eric Postpischil has asked 35 questions and find answers to 748 problems.

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About

Senior software engineer in Apple’s Vector and Numerics Group (retired).

Eric Postpischil questions

How to fix "variable previously declared 'static' redeclared 'extern' error"? [duplicate]
Is an fscanf/scanf/sscanf conversion specification with assignment suppressed not a conversion?
Is GCC warning on const qualifier correct?
Is assigning to a union member from a different member in the same union defined by the C standard?
Why is _Alignof missing from the rule about converting an array to a pointer?
Why was SIGFPE used for integer arithmetic exceptions?
Is a redeclaration of an untagged structure a compatible type?
May C evaluate with multiple floating-point formats?
How are multiple prior declarations resolved for a new declaration with extern?
Can a pointer to an incomplete type be incomplete?

Eric Postpischil answers

Do a union or struct permit assignment from an uninitialised instance?
Bitwise rotation function in c
Why do we need header files in C when we can use 'extern' identifiers?
what does using typedef mean when used without an existing definition
Why do C compilers make it so hard to get -Wwrite-strings warnings?
Unnecessary recursion calls
#pragma STDC FENV_ACCESS
Newbie question about C variable declarations
Man page workaround for dlsym() still error prone?
does calling a function means leaving the scope of an object declared prior to that call in C?