[PATCH 15/17] msvc: do not pretend to support all signals

[Jeff Hostetler via GitGitGadget]

From: Jeff Hostetler <jeffh...@microsoft.com>

This special-cases various signals that are not supported on Windows,
such as SIGPIPE. These cause the UCRT to throw asserts (at least in
debug mode).

Signed-off-by: Jeff Hostetler <jeffh...@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
---
 compat/mingw.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/compat/mingw.c b/compat/mingw.c
index 667285887a..8b56aa5773 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -2119,8 +2119,34 @@ int mingw_raise(int sig)
                        sigint_fn(SIGINT);
                return 0;
 
+#if defined(_MSC_VER)
+               /*
+                * <signal.h> in the CRT defines 8 signals as being
+                * supported on the platform.  Anything else causes
+                * an "Invalid signal or error" (which in DEBUG builds
+                * causes the Abort/Retry/Ignore dialog).  We by-pass
+                * the CRT for things we already know will fail.
+                */
+               /*case SIGINT:*/
+       case SIGILL:
+       case SIGFPE:
+       case SIGSEGV:
+       case SIGTERM:
+       case SIGBREAK:
+       case SIGABRT:
+       case SIGABRT_COMPAT:
+               return raise(sig);
+       default:
+               errno = EINVAL;
+               return -1;
+
+#else
+
        default:
                return raise(sig);
+
+#endif
+
        }
 }
 
-- 
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