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On Windows, the ':' character is special and when the module name is a single character, like 'A', then the flatname would be (for example) 'A:Foo'. On Windows, 'A:Foo' is treated as an absolute path by the module loader and is likely not found. Without this patch, the test case pr98944_c.C fails with: In module imported at /src/gcc/testsuite/g++.dg/modules/pr98944_b.C:7:1, of module A:Foo, imported at /src/gcc/testsuite/g++.dg/modules/pr98944_c.C:7: A:Internals: error: header module expected, module 'A:Internals' found A:Internals: error: failed to read compiled module: Bad file data A:Internals: note: compiled module file is 'gcm.cache/A-Internals.gcm' In module imported at /src/gcc/testsuite/g++.dg/modules/pr98944_c.C:7:8: A:Foo: error: failed to read compiled module: Bad import dependency A:Foo: note: compiled module file is 'gcm.cache/A-Foo.gcm' A:Foo: fatal error: returning to the gate for a mechanical issue compilation terminated. gcc/cp/ChangeLog: * module.cc: On Windows, 'A:Foo' is supposed to be a module and not a path. Co-Authored-By: Yvan ROUX <yvan.roux@foss.st.com> Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
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