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Kenneth Graunke authored
This warning detects non-void functions with a missing return statement, return statements with a value in void functions, and functions with an bogus return type that ends up defaulting to int. It's already enabled by default with -Wall. Generally, these are fairly serious bugs in the code, which developers would like to notice and fix immediately. This patch promotes it from a warning to an error, to help developers catch such mistakes early. I would not expect this warning to change much based on the compiler version, so hopefully it won't become a problem for packagers/builders. See the GCC documentation or 'man gcc' for more details: https://gcc.gnu.org/onlinedocs/gcc-7.3.0/gcc/Warning-Options.html#index-Wreturn-type Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
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