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Add configure test to see if the C compiler has gcc-style computed gotos.

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We'll need this for the upcoming patch to speed up expression evaluation.
Might as well push it now to see if it behaves sanely in the buildfarm.

Andres Freund

Discussion: https://postgr.es/m/20170320062511.hp5qeurtxrwsvfxr@alap3.anarazel.de
This commit is contained in:
Tom Lane
2017-03-20 13:35:21 -04:00
parent 14a72525d2
commit bc18126a6b
5 changed files with 65 additions and 0 deletions
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3
src/include/pg_config.h.in
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@ -108,6 +108,9 @@
/* Define to 1 if you have the `clock_gettime' function. */
#undef HAVE_CLOCK_GETTIME
/* Define to 1 if your compiler handles computed gotos. */
#undef HAVE_COMPUTED_GOTO
/* Define to 1 if you have the <crtdefs.h> header file. */
#undef HAVE_CRTDEFS_H

3
src/include/pg_config.h.win32
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@ -78,6 +78,9 @@
/* Define to 1 if you have the `clock_gettime' function. */
/* #undef HAVE_CLOCK_GETTIME */
/* Define to 1 if your compiler handles computed gotos. */
/* #undef HAVE_COMPUTED_GOTO */
/* Define to 1 if you have the `crypt' function. */
/* #undef HAVE_CRYPT */