[llvm-bugs] [Bug 25349] New: clang prints crash report on SIGPIPE if its output is large and piped into `head`

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25349

            Bug ID: 25349
           Summary: clang prints crash report on SIGPIPE if its output is
                    large and piped into `head`
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: nicolasweber at gmx.de
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

$ cat test.mm
#import <Cocoa/Cocoa.h>  // Or a different gigantic header.
$ clang -E test.mm | head
# 1 "test.mm"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 342 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "test.mm" 2
# 1
"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Cocoa.framework/Headers/Cocoa.h"
1 3
# 12
"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Cocoa.framework/Headers/Cocoa.h"
3
# 1
"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h"
1 3
clang: error: unable to execute command: Broken pipe: 13
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
Apple LLVM version 7.0.0 (clang-700.0.72)
Target: x86_64-apple-darwin14.5.0
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
http://developer.apple.com/bugreporter/ and include the crash backtrace,
preprocessed source, and associated run script.
clang: note: diagnostic msg: 
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg:
/var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-e2e4ff.mm
clang: note: diagnostic msg:
/var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/test-e2e4ff.sh
clang: note: diagnostic msg: 

********************


The driver probably shouldn't print these crash reports for SIGPIPE.

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