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cconstantsc89

Trying to assign new value to a constant

This is extracted from my module:

When trying to assign a new value to a constant after it's initialization the compiler issues (only) a warning message.

This is not correct in C99 but my module seem to be based on C89 could somebody confirm the validity of this statement as per C89.

Solution

  • C89 and C99 seems to both generate an error for this case which looks correct, using code in http://ideone.com/x8lXL ;

    # C89
[~]> gcc -std=c89 test.c
test.c: In function ‘main’:
test.c:5: error: assignment of read-only variable ‘A’

# C99
[~]> gcc -std=c99 test.c
test.c: In function ‘main’:
test.c:5: error: assignment of read-only variable ‘A’

    Also note that clang agrees to gcchere.