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--- a/gcc/gcc.c
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+++ b/gcc/gcc.c
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@@ -8029,7 +8029,10 @@ getenv_spec_function (int argc, const ch
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value = getenv (argv[0]);
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if (!value)
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- fatal_error ("environment variable %qs not defined", argv[0]);
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+ {
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+ warning (0, "environment variable %qs not defined", argv[0]);
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+ value = "";
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+ }
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/* We have to escape every character of the environment variable so
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they are not interpreted as active spec characters. A
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