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| Next: <a href="libgcj-Tests.html#libgcj-Tests" accesskey="n" rel="next">libgcj Tests</a>, Previous: <a href="Ada-Tests.html#Ada-Tests" accesskey="p" rel="prev">Ada Tests</a>, Up: <a href="Testsuites.html#Testsuites" accesskey="u" rel="up">Testsuites</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
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| <a name="C-Language-Testsuites"></a> |
| <h3 class="section">7.4 C Language Testsuites</h3> |
| |
| <p>GCC contains the following C language testsuites, in the |
| <samp>gcc/testsuite</samp> directory: |
| </p> |
| <dl compact="compact"> |
| <dt><samp>gcc.dg</samp></dt> |
| <dd><p>This contains tests of particular features of the C compiler, using the |
| more modern ‘<samp>dg</samp>’ harness. Correctness tests for various compiler |
| features should go here if possible. |
| </p> |
| <p>Magic comments determine whether the file |
| is preprocessed, compiled, linked or run. In these tests, error and warning |
| message texts are compared against expected texts or regular expressions |
| given in comments. These tests are run with the options ‘<samp>-ansi -pedantic</samp>’ |
| unless other options are given in the test. Except as noted below they |
| are not run with multiple optimization options. |
| </p></dd> |
| <dt><samp>gcc.dg/compat</samp></dt> |
| <dd><p>This subdirectory contains tests for binary compatibility using |
| <samp>lib/compat.exp</samp>, which in turn uses the language-independent support |
| (see <a href="compat-Testing.html#compat-Testing">Support for testing binary compatibility</a>). |
| </p></dd> |
| <dt><samp>gcc.dg/cpp</samp></dt> |
| <dd><p>This subdirectory contains tests of the preprocessor. |
| </p></dd> |
| <dt><samp>gcc.dg/debug</samp></dt> |
| <dd><p>This subdirectory contains tests for debug formats. Tests in this |
| subdirectory are run for each debug format that the compiler supports. |
| </p></dd> |
| <dt><samp>gcc.dg/format</samp></dt> |
| <dd><p>This subdirectory contains tests of the <samp>-Wformat</samp> format |
| checking. Tests in this directory are run with and without |
| <samp>-DWIDE</samp>. |
| </p></dd> |
| <dt><samp>gcc.dg/noncompile</samp></dt> |
| <dd><p>This subdirectory contains tests of code that should not compile and |
| does not need any special compilation options. They are run with |
| multiple optimization options, since sometimes invalid code crashes |
| the compiler with optimization. |
| </p></dd> |
| <dt><samp>gcc.dg/special</samp></dt> |
| <dd><p>FIXME: describe this. |
| </p> |
| </dd> |
| <dt><samp>gcc.c-torture</samp></dt> |
| <dd><p>This contains particular code fragments which have historically broken easily. |
| These tests are run with multiple optimization options, so tests for features |
| which only break at some optimization levels belong here. This also contains |
| tests to check that certain optimizations occur. It might be worthwhile to |
| separate the correctness tests cleanly from the code quality tests, but |
| it hasn’t been done yet. |
| </p> |
| </dd> |
| <dt><samp>gcc.c-torture/compat</samp></dt> |
| <dd><p>FIXME: describe this. |
| </p> |
| <p>This directory should probably not be used for new tests. |
| </p></dd> |
| <dt><samp>gcc.c-torture/compile</samp></dt> |
| <dd><p>This testsuite contains test cases that should compile, but do not |
| need to link or run. These test cases are compiled with several |
| different combinations of optimization options. All warnings are |
| disabled for these test cases, so this directory is not suitable if |
| you wish to test for the presence or absence of compiler warnings. |
| While special options can be set, and tests disabled on specific |
| platforms, by the use of <samp>.x</samp> files, mostly these test cases |
| should not contain platform dependencies. FIXME: discuss how defines |
| such as <code>NO_LABEL_VALUES</code> and <code>STACK_SIZE</code> are used. |
| </p></dd> |
| <dt><samp>gcc.c-torture/execute</samp></dt> |
| <dd><p>This testsuite contains test cases that should compile, link and run; |
| otherwise the same comments as for <samp>gcc.c-torture/compile</samp> apply. |
| </p></dd> |
| <dt><samp>gcc.c-torture/execute/ieee</samp></dt> |
| <dd><p>This contains tests which are specific to IEEE floating point. |
| </p></dd> |
| <dt><samp>gcc.c-torture/unsorted</samp></dt> |
| <dd><p>FIXME: describe this. |
| </p> |
| <p>This directory should probably not be used for new tests. |
| </p></dd> |
| <dt><samp>gcc.misc-tests</samp></dt> |
| <dd><p>This directory contains C tests that require special handling. Some |
| of these tests have individual expect files, and others share |
| special-purpose expect files: |
| </p> |
| <dl compact="compact"> |
| <dt><samp><code>bprob*.c</code></samp></dt> |
| <dd><p>Test <samp>-fbranch-probabilities</samp> using |
| <samp>gcc.misc-tests/bprob.exp</samp>, which |
| in turn uses the generic, language-independent framework |
| (see <a href="profopt-Testing.html#profopt-Testing">Support for testing profile-directed |
| optimizations</a>). |
| </p> |
| </dd> |
| <dt><samp><code>gcov*.c</code></samp></dt> |
| <dd><p>Test <code>gcov</code> output using <samp>gcov.exp</samp>, which in turn uses the |
| language-independent support (see <a href="gcov-Testing.html#gcov-Testing">Support for testing gcov</a>). |
| </p> |
| </dd> |
| <dt><samp><code>i386-pf-*.c</code></samp></dt> |
| <dd><p>Test i386-specific support for data prefetch using <samp>i386-prefetch.exp</samp>. |
| </p></dd> |
| </dl> |
| |
| </dd> |
| <dt><samp>gcc.test-framework</samp></dt> |
| <dd><dl compact="compact"> |
| <dt><samp><code>dg-*.c</code></samp></dt> |
| <dd><p>Test the testsuite itself using <samp>gcc.test-framework/test-framework.exp</samp>. |
| </p></dd> |
| </dl> |
| |
| </dd> |
| </dl> |
| |
| <p>FIXME: merge in <samp>testsuite/README.gcc</samp> and discuss the format of |
| test cases and magic comments more. |
| </p> |
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