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Generate warnings if code violates strict ISO C and ISO C++.

If you use the -pedantic option, the compiler generates warnings if your code uses any language feature that conflicts with strict ISO C or ISO C++.


-pedantic is disabled by default.


void foo(void)
    long long i; /* okay in nonstrict C90 */

Compiling this code with -pedantic generates a warning.

armclang --target=arm-arm-none-eabi -march=armv8-a file.c -c -std=c90 -pedantic


The -pedantic option is stricter than the -Wpedantic option.