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a subprocess invocation which is pretty significant on Windows. It also likely saves a bunch of thrashing the host machine needlessly. Finally it makes the tests much more predictable and less dependent on the host. For example 'header_lookup1.c' was passing '-fno-ms-extensions' just to thwart the host detection adding it into the compilation. By runnig CC1 directly we don't have to deal with such oddities. llvm-svn: 199308
3 lines
66 B
C
3 lines
66 B
C
// RUN: %clang_cc1 %s -E | grep 'stddef.h.*3'
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#include <stddef.h>
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