Where clause on invalid declaration causes the parser running forever

[secure-sw-dev-bot]

This issue was copied from checkedc/checkedc-clang#1144

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The test is running on the latest master 373b5dc.

The file content of wrong_where_place1.c is

int *g_arr5  : bounds(g_arr5, g_arr5 + 5) _Where x == 1;

The command is clang -cc1 wrong_where_place1.c

The behavior is the compiler outputs wrong_where_place1.c:1:43: error: where clause on invalid decl forever.
The expected should be one error message and exit.

I did the basic debug. The error message is defined at line 1575 of DiagnosticParserKinds.td and is thrown at line 1937 ParseWhereClauseOnDecl of ParserDecl.cpp.

[secure-sw-dev-bot]

Comment from @arbipher:

duplicate with #1096