This commit fixes "TextDiagnostic::emitIncludeLocation" when compiling
with "-fdiagnostics-absolute-paths" flag enabled by emitting the absolute
path of the included file.
Fixes#63026
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D151833
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,
void func();
becomes
void func(void);
This is the sixth batch of tests being updated (there are a significant
number of other tests left to be updated).
