Eric Postpischil

Eric Postpischil has asked 36 questions and find answers to 920 problems.

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About

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

Eric Postpischil questions

Why do GCC and Clang produce different output with variable length array?
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?

Eric Postpischil answers

conditional initialization of static arrays, using compound literals
Defining a recursive function inside another function in C
Writting to binary file a struct adds 0s
floating point addition and subtraction
How are constant stored in memory in C?
Can a header file name start with a digit?
Difference in creating a struct using malloc and without malloc
Is it enough to only restrict the "out"-(pointer-)parameters of a function?
Width of int64_t, is it always 64 bits?
GCC warns of pointer reuse after realloc