forked from OSchip/llvm-project
54 lines
2.2 KiB
C
54 lines
2.2 KiB
C
// Parse diagnostic arguments in the driver
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// Exactly which arguments are warned about and which aren't differ based
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// on what target is selected. -stdlib= and -fuse-ld= emit diagnostics when
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// compiling C code, for e.g. *-linux-gnu. Linker inputs, like -lfoo, emit
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// diagnostics when only compiling for all targets.
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// This is normally a non-fatal warning:
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// RUN: %clang --target=x86_64-apple-darwin10 \
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// RUN: -fsyntax-only -lfoo %s 2>&1 | FileCheck %s
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// Either with a specific -Werror=unused.. or a blanket -Werror, this
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// causes the command to fail.
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// RUN: not %clang --target=x86_64-apple-darwin10 \
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// RUN: -fsyntax-only -lfoo \
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// RUN: -Werror=unused-command-line-argument %s 2>&1 | FileCheck %s
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// RUN: not %clang --target=x86_64-apple-darwin10 \
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// RUN: -fsyntax-only -lfoo -Werror %s 2>&1 | FileCheck %s
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// With a specific -Wno-..., no diagnostic should be printed.
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// RUN: %clang --target=x86_64-apple-darwin10 \
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// RUN: -fsyntax-only -lfoo -Werror \
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// RUN: -Wno-unused-command-line-argument %s 2>&1 | count 0
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// With -Qunused-arguments, no diagnostic should be printed.
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// RUN: %clang --target=x86_64-apple-darwin10 \
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// RUN: -fsyntax-only -lfoo -Werror \
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// RUN: -Qunused-arguments %s 2>&1 | count 0
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// With the argument enclosed in --{start,end}-no-unused-arguments,
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// there's no diagnostic.
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// RUN: %clang --target=x86_64-apple-darwin10 -fsyntax-only \
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// RUN: --start-no-unused-arguments -lfoo --end-no-unused-arguments \
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// RUN: -Werror %s 2>&1 | count 0
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// With --{start,end}-no-unused-argument around a different argument, it
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// still warns about the unused argument.
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// RUN: not %clang --target=x86_64-apple-darwin10 \
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// RUN: --start-no-unused-arguments -fsyntax-only --end-no-unused-arguments \
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// RUN: -lfoo -Werror %s 2>&1 | FileCheck %s
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// Test clang-cl warning about unused linker options.
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// RUN: not %clang_cl -fsyntax-only /WX \
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// RUN: -LD -- %s 2>&1 | FileCheck %s --check-prefix=CL-WARNING
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// Test clang-cl ignoring the warning with --start-no-unused-arguments.
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// RUN: %clang_cl -fsyntax-only /WX \
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// RUN: --start-no-unused-arguments /LD --end-no-unused-arguments -- %s 2>&1 | count 0
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// CHECK: -lfoo: 'linker' input unused
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// CL-WARNING: argument unused during compilation: '-LD'
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